History TearJerker / DemonSlayerKimetsuNoYaiba

* Tamayo is revealed by Muzan in their confrontation to have eaten her own family when she turned into a demon, and then ate other humans in despair for a period. Worse, the only reason she became a demon was that she was dying of an incurable illness and wanted to see her children grow up. Knowing this makes her tears when Nezuko hugs her far sadder in hindsight; she was likely thinking of her own children.

* Chapter 179: Tokito and Genya both die. Tokito reunites with his brother in the afterlife and tells him how he was happy with is life and that protecting his friends with his life is not pointless. Sanemi sees Genya's body and starts screaming as he starts turning to dust. Genya apologizes and thanks Sanemi and calls him nice as Sanemi can only scream and cry.

* When Nezuko turns into a demon, the first thing she does is attack her brother. Tanjiro, who's barely holding her back with the handle of his axe, [[IKnowYoureInThereSomewhereFight can only tearfully beg her not to give in and become the bloodthirsty monster all other demons are]]. And it ''works'', since Nezuko relents... and also starts crying; She ''really'' didn't want to hurt her brother, but her newfound hunger for flesh almost drove her to do so.

* Chapter 178: The final WhamShot of the chapter: Despite all that had transpired between them, when Kokushibo cut down Yoriichi's corpse, he saw that Yoriichi had always kept the flute Kokushibo had made for him as a child, bringing Kokushibo to tears. Despite all his bitterness and hatred, Yoriichi never once looked at him with anything but love and admiration...and when Kokushibo finally fades away, all that's left is the broken flute, the TragicKeepsake he kept for so many centuries as a reminder of his brother and the last lingering shreds of his humanity.

* Chapter 177 shows more of Yoriichi and Kokushibou’s past, revealing how much Yoriichi loved his twin brother even though he had trouble expressing his emotions. Which makes his clear display of emotion upon seeing his brother as a demon much more heartbreaking.

* When Nezuko turns into a demon, the first thing she does is attack her brother. Tanjiro, who's barely holding her back with the handle of his axe, can only tearfully beg her not to give in and become the bloodthirsty monster all other demons are. And it ''works'', since Nezuko relents... and also starts crying; She ''really'' didn't want to hurt her brother, but her newfound hunger for flesh almost drove her to do so.

* When Nezuko turns into a demon, the first thing she does is attack her brother. Tanjiro, who's barely holding her back with the handle of his axe, can only tearfully beg her not to give in and become the bloodthirsty monster all other demons are. And it ''works'', since Nezuko relents... and also starts crying; She didn't want to hurt her brother, but her newfound hunger for flesh almost drove her to do so.

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** When Rui was a human, he was a sickly child whose parents asked a doctor (actually Muzan) to grant him a strong body. He got turned into a demon and started eating humans. Realizing their mistakes, his parents tried to do a murder-suicide to him, but Rui felt betrayed and killed them first. This was what caused his obsession with familial bonds despite losing his memories. It was only at his last moments that he remembered it, and that his mother's last words were an apology for not giving him a strong body. Realizing his parents truly loved him all along, he regretted that his evil deeds would lead him to hell, away from his parents. The truly tearjerking part comes right after, as Rui's spirit started to descend to hell, his parents' spirits came to him, declared that they will always be together, [[YouAreWorthHell accompanying him to hell]]. The sequence ends with Rui constantly apologizing to his parents as the three of them got engulfed in hell's flames.

* Chapter 176 shows Kokushibou's last stand against Himejima, Muichirou, and Sanemi. Fearing that he might lose, Kokushibou assumes a monstrous spider-like form. Upon seeing his reflection on Sanemi's blade, he realizes his own hideousness and is filled with shame. A flashback shows a young Yorichii happily complimenting his big brother and asking him if he wanted to become the strongest samurai of the land. The young Yorichii then tells him that he wanted to be like his big brother and become the second strongest samurai alongside with him. The flashback makes Kokushibou question the entirety of his goal throughout the centuries of assuming his demon form. At the end of the battle, he admits to himself that he just wanted to be like Yorichii.

** When Rui was a human, he was a sickly child whose parents asked a doctor (actually Muzan) to grant him a strong body. He got turned into a demon and started eating humans. Realizing their mistakes, his parents tried to do a murder-suicide to him, but Rui felt betrayed and killed them first. This was what caused his obsession with familial bonds despite losing his memories. It was only at his last moments that he remembered it, and that his mother's last words was an apology for not giving him a strong body. Realizing his parents truly loved him all along, he regretted that his evil deeds would lead him to hell, away from his parents. The truly tearjerking part comes right after, as Rui's spirit started to descend to hell, his parents' spirits came to him, declared that they will always be together, [[YouAreWorthHell accompanying him to hell]]. The sequence ends with Rui constantly apologizing to his parents as the three of them got engulfed in hell's flames.
** Daki and Gyuutarou were truly evil demons who killed countless numbers of people, but their sibling bond is genuine. Gyuutarou was a hideous kid who is hated by everyone, even his own mother. It was only after his sister Ume (which would later became Daki) was born that he found happiness. Ume started to work as a geisha while Gyuutarou became a debt collector. One day, however, a customer tried to assault her and she countered by stabbing his eyes. This caused her to get burned to death while he was away. Enraged at this, Gyuutarou accepted Douma's offer to become a demon, only so that he can be with sister again and to get back at the unfair world that made them suffer. In his last moments, he regretted how she ended up, imagining she could have lived much better lives if she weren't related to him. During the afterlife sequence, while he was preparing to go to hell, he shooed Daki away, telling her to go the "place with light", hoping she could still have a chance at redemption. This only caused her to cry and apologize for being weak. She stuck to his back, not wanting to separated from him, saying that they will always be together, and that she would still be his sister even after reincarnation, all while crying violently as the two walked to hell.
** Akaza has one of the most tragic lives in the manga. Born as Hakuji, he lived in poverty with a sickly father. This forced him to pickpocket and commit crimes from a very young age to obtain money for his father's medicine. His filial piety was not rewarded, however, as his father committed suicide so that he would not be a further burden and Hakuji could live an honest life. During his mourning, he got into a brawl and was scouted by a martial artist. Things began to start looking up when he was accepted as a disciple, and he even fell into a mutual love with the master's daughter. His happiness didn't last long, as some rivals who wanted their dojo poisoned the waters, killing his new family. Enraged, he charged into the rivals' dojo, brutally slaughtering every one of them. Muzan found him shortly afterward. Amazed at his strength, he forcibly turned the broken Hakuji into a demon, who only said he ''just didn't care anymore''. Losing his human memories, as the demon Akaza he once again started pursuing strength, which he then realizes was meaningless as he no longer has anything to protect. However, the spirits of his father, master, and lover manage to reach out to Akaza and convince him to return back to normal. In the end, Akaza returns back into Hakuji and tearfully embraces his lover, repeatedly asking for her forgiveness for not being able to protect his loved ones. She was just glad that he remembered them and tearfully welcomed him back, also embracing him closely.
* Tamayo is revealed by Muzan in their confrontation to have eaten her own family when she turned into a demon, and then ate other humans in despair for a period. Worse, the only reason she became a demon was because she was dying of an incurable illness and wanted to see her children grow up. Knowing this makes her tears when Nezuko hugs her far sadder in hindsight; she was likely thinking of her own children.
* Zenitsu’s life was filled with self-doubt and wrong turns, he was always looking for a place to belong, to really feel someone loved him; it was by accident that Zenitsu got taken into the world of demon slaying by the chance encounter with the elder known as Jigoro Kuwajima, Zenitsu seemly hated training as he felt no progress was made at all, Zenitsu felt like a failure, he wanted to run but Jigoro did his best to steer Zenitsu into the path of the Breath of Thunder, even with all his incessant bawling Zenitsu realized his master Jigoro was the first person to ever truly stick by him, so the news about [[spoiler:his seppuku devastated Zenitsu, Jigoro died alone to atone for his other pupil betraying the corps to become a demon, Kaigaku was the cause but even so Zenitsu had some degree of respect for his colleague but Jigoro committing suicide to atone was just too much, Zenitsu’s newfound resolve eventually made him triumph over Kaigaku, the once perceived superior disciple, but the real win in Zenitsu’s path was his master himself telling him on the way to the afterlife that Zenitsu was his pride and joy, Zenitsu truly found someone who had loved him, the chance meeting that changed his life for the better, even if tears were to be shed along the way]].
* Inosuke comes to aid Kanao just in time to protect her. When he sees her hurt, he chides her for not being careful and that Shinobu will get mad. [[spoiler: It's only due to her sorrowful stare that he realizes Shinobu is dead, causing him to remember that time when the older girl took care of him and bonded with him with a pinky promise.]] Needless to say, Inosuke is ''pissed''.

* Sanemi's motivation was shortly revealed after. In a flashback, it shows Sanemi having to fight demons on his own with whatever tools he could find before befriending a Demon Slayer and joining the organization. The two bonded together and became best friends. However, after defeating a Lower Moon, Sanemi had lost his friend due to critical injuries. The day after, Pillars are called for a meeting and Sanemi starts accusing Ubuyashiki of being cowardly and viewing him and the other Demon Slayers as cannon fodder. Ubuyashiki calmly apologizes to Sanemi and explains that he truly wished he could join his fellow Demon Slayers, but due to his weak body, he could not perform the training to do so. He also saw himself as cannon fodder and soon revealed that his son would continue on in his place should he ever fall in battle. And he reveals that he always remembered the names of the fallen Demon Slayers, including Sanemi's best friend and loved them all equally. He gives his best friend's will to Sanemi, which reveals that his best friend saw his own brother in Sanemi and only wanted his brother to live a happy life. This moves Sanemi to tears and thus became his enitre motivation to keep his own brother Genya safe and sound.

* Chapter 176 shows Kokushibou's last stand against Himejima, Muichirou, and Sanemi. Fearing that he might lose, Kokushibou assumes a monstrous spider-like form. Upon seeing his reflection on Sanemi's blade, he realizes his own hideousness and is filled with shame. A flashback shows a young Yorichii happily complimenting his big brother and asking him if he wanted to become the strongest samurai of the land. The young Yorichii then tells him that he wanted to be like his big brother and become the second strongest samurai alongside with him. The flashback makes Kokushibou question the entirety of his goal throughout the centuries of assuming his demon form. In the end of the battle, he admits to himself that he just wanted to be like Yorichii.

--> Sanemi: "You should've gotten goddamn married, had some goddamn kids and lived until you became a goddamn old geezer. For all the times we couldn't do a thing for mom, and for all the times we couldn't do a thing for our little siblings. You should have made your goddamn wife and kids as happy as they would have been. Because I would've made sure that no demons would be heading your way..."

*** Sanemi: "You should've gotten goddamn married, had some goddamn kids and lived until you became a goddamn old geezer. For all the times we couldn't do a thing for mom, and for all the times we couldn't do a thing for our little siblings. You should have made your goddamn wife and kids as happy as they would have been. Because I would've made sure that no demons would be heading your way..."

* The relationship between both Yoriichi and Michikatsu Tsugikuni is really sad when both end up having to duel one another, with Yoriichi as an elder man and Michikatsu now a demon. Yoriichi sheds tears after seeing his older brother in his demon state and Michikatsu felt confusing emotions by just seeing his younger brother as a elder man. Because of the situation that they were in, both brothers had no other decision but to fight each other.

*** Sanemi: "You should've gotten goddamn married, had some goddamn kids and lived until you became a goddamn old geezer. For all the times we couldn't do a thing for mom, and for all the times we couldn't do a thing for our little siblings. You should have made your goddamn wife and kids as happy as they would have been. Because I would've made sure that no demonds would be heading your way..."

* The relationship between both Yoriichi and Michikatsu Tsugikuni is really sad when both end up having to duel one another, with Yoriichi as an elder man and Michikatsu now a demon. Yoriichi sheds tears after seeing his older brother in his demon staet and Michikatsu felt confusing emotions by just seeing his younger brother as a elder man. Because of the situation that they were in, both brothers had no other decision but to fight each other.

* Sanemi's motivation was shortly revealed after. In a flashback, it shows Sanemi having to fight demons on his own with whatever tools he could find before befriending a Demon Slayer and joining the organization. The two bonded together and became best friends. However, after defeating a Lower Moon, Sanemi had lost his friend due to critical injuries. The day after, Pillars are called for a meeting and Sanemi starts accusing Ubuyashiki of being cowardly and viewing him and the other Demon Slayers as cannon fodder. Ubuyashiki calmly apologizes to Sanemi and explains that he truly wished he could join his fellow Demon Slayers, but due to his weak body, he could not perform the training to do so. He also saw himself as cannon fodder and soon revealed that his son would continue on in his place should he ever fall in battle. And he reveals that he always remembered the names of the fallen Demon Slayers, including Sanemi's best friend and loved them all equally. He gives his best friend's will to Sanemi, which reveals that his best friend saw his own brother in Sanemi and only wanted his brother to live a happy life. This moves Sanemi to tears and thus became his enitre motivation to keep his own brother Genya safe and sound.

** Akaza has one of the most tragic lives in the manga. Born as Hakuji, he lived in poverty with a sickly father. This forced him to pickpocket and commit crimes from a very young age to obtain money for his father's medicine. His filial piety was not rewarded, however, as his father committed suicide so that he would not be a further burden and Hakuji could live an honest life. During his mourning, he got into a brawl and was scouted by a martial artist. Things began to start looking up when he was accepted as a disciple, and he even fell into a mutual love with the master's daughter. His happiness didn't last long, as some rivals who wanted their dojo poisoned the waters, killing his new family. Enraged, he charged into the rivals' dojo, brutally slaughtering every one of them. Muzan found him shortly afterward. Amazed at his strength, he forcibly turned the broken Hakuji into a demon. Losing his human memories, as the demon Akaza he once again started pursuing strength, which he then realizes was meaningless as he no longer has anything to protect. However, the spirits of his father, master, and lover manage to reach out to Akaza and convince him to return back to normal. In the end, Akaza returns back into Hakuji and tearfully embraces his lover, repeatedly asking for her forgiveness for not being able to protect his loved ones. She was just glad that he remembered them and tearfully welcomed him back, also embracing him closely.

** Daki and Gyuutarou were truly evil demons who killed countless numbers of people, but their sibling bond is genuine. Gyuutarou was a hideous kid who is hated by everyone, even his own mother. It was only after his sister Ume (which would later became Daki) was born that he found happiness. Ume started to work as a geisha while Gyuutarou became a debt collector. One day, however, a customer tried to assault her and she countered by stabbing his eyes. This caused her to get burned to death while he was away. Enraged at this, Gyuutarou accepted Douma's offer to become a demon, only so that he can be with sister again and to get back at the unfair world that made them suffer. In his last moments, he regretted how she ended up, imagining she could have lived much better lives if she weren't related to him. During the afterlife sequence, while he was preparing to go to hell, he shooed Daki away, telling her to go the "place with light", hoping she could still have a chance at redemption. This only caused her to cry and apologize for being weak. She stuck to his back, not wanting to separate, saying that they will always be together, and that she would still be his sister even after reincarnation, all while crying violently as the two walked to hell.

** Akaza has one of the most tragic lives in the manga. Born as Hakuji, he lived in poverty with a sickly father. This forced him to pickpocket and commit crimes from a very young age to obtain money for his father's medicine. His filial piety was not rewarded, however, as his father committed suicide so that he would not be a further burden and Hakuji could live an honest life. During his mourning, he got into a brawl and was scouted by a martial artist. Things began to start looking up when he was accepted as a disciple, and he even fell into a mutual love with the master's daughter. His happiness didn't last long, as some rivals who wanted their dojo poisoned the waters, killing his new family. Enraged, he charged into the rivals' dojo, brutally slaughtering every one of them. Muzan found him shortly afterwards. Amazed at his strength, he forcibly turned the broken Hakuji into a demon. Losing his human memories, as the demon Akaza he once again started pursuing strength, which he then realizes was meaningless as he no longer has anything to protect. However, the spirits of his father, master, and lover manage to reach out to Akaza and convince him to return back to normal. In the end, Akaza returns back into Hakuji and tearfully embraces his lover, repeatedly asking for her forgiveness for not being able to protect his loved ones. She was just glad that he remembered them and tearfully welcomed him back, also embracing him closely.

* In the fight against Kokushibou, he cuts off the limbs of Muichirou and Genya, soon about to finish off Genya with one slash. However, Sanemi breaks through the ceiling to save his brother. He later reveals that the way he acted towards Genya wasn't out of hatred over Genya calling him a monster, but out of brotherly love. He wanted to keep Genya away from the Demon Slaying Organization so that he could find a happier life for their family and for himself. Genya, realizing that Sanemi loved him all this time, tearfully apologizes to his big brother.
* Sanemi's motivation was shortly revealed after. In a flashback, it shows Sanemi having to fight demons on his own with whatever tools he could find before befriending a Demon Slayer and joining the organization. The two bonded together and became best friends. However, after defeating a Lower Moon, Sanemi had lost his friend due to critical injuries. The day after, Pillars are called for a meeting and Sanemi starts accusing Ubuyashiki of being cowardly and viewing him and the other Demon Slayers as cannon fodder. Ubuyashiki calmly apologizes to Sanemi and explains that he truly wished he could join his fellow Demon Slayers, but due to his weak body, he could not perform the training to do so. He also saw himself as cannon fodder and soon revealed that his son would continue on in his place should he ever fall in battle. And he reveals that he always remembered the names of the fallen Demon Slayers, including Sanemi's best friend and loved them all equally. He gives his best friend's will to Sanemi, which reveals that his best friend saw his own brother in Sanemi and only wanted his brother to live a happy life. This moves Sanemi to tears and thus became his motivation to keep his own brother Genya safe and sound.

* Sanemi's motivation was shortly revealed after. In a flashback, it shows Sanemi having to fight demons on his own with whatever tools he could find before befriending a Demon Slayer and joining the organization. The two bonded together and became best friends. However, after defeating a Lower Moon, Sanemi had lost his friend due to critical injuries. The day after, Pillars are called for a meeting and Sanemi starts accusing Ubuyashiki of being cowardly and viewing him and the other Demon Slayers cannon fodder. Ubuyashiki calmly apologizes to Sanemi and explains that he truly wished he could join his fellow Demon Slayers, but due to his weak body, he could not perform the training to do so. He also saw himself as cannon fodder and soon revealed that his son would continue on in his place should he ever fall in battle. And he reveals that he always remembered the names of the fallen Demon Slayers, including Sanemi's best friend and loved them all equally. He gives his best friend's will to Sanemi, which reveals that his best friend saw his own brother in Sanemi and only wanted his brother to live a happy life. This moves Sanemi to tears and thus became his motivation to keep his own brother Genya safe.

* In the fight against Kokushibou, he cuts off the limbs of Muichirou and Genya, soon about to finish off Genya with one slash. However, Sanemi breaks through the ceiling to save his brother. He later reveals that the way he acted towards Genya wasn't out of hatred over Genya calling him a monster, but out of brotherly love. He wanted to keep Genya away from the Demon Slaying Organization so that he could find a happier life for their family and for himself. Genya, realizing that Sanemi loved him all this time, tearfully apologizes to his big brother.

** Akaza has one of the most tragic lives in the manga. Born as Hakuji, he lived in poverty with a sickly father. This forced him to pickpocket and commit crimes from a very young age to obtain money for his father's medicine. His filial piety was not rewarded, however, as his father committed suicide so that he would not be a further burden and Hakuji could live an honest life. During his mourning, he got into a brawl and was scouted by a martial artist. Things began to start looking up when he was accepted as a disciple, and he even fell into a mutual love with the master's daughter. His happiness didn't last long, as some rivals who wanted their dojo poisoned the waters, killing his new family. Enraged, he charged into the rivals' dojo, brutally slaughtering every one of them. Muzan found him shortly afterwards. Amazed at his strength, he forcibly turned the broken Hakuji into a demon. Losing his human memories, as the demon Akaza he once again started pursuing strength, which he then realizes was meaningless as he no longer has anything to protect.

* Inosuke comes to aid Kanao just in time to protect her. When he sees her hurt, he chides her for not being careful and that Shinobu will get mad. [[spoiler: It's only due to her sorrowful stare that he realizes Shinobu is dead, causing him to remember that time when the older girl took care of him and bonded with him with a pinky promise.]] Needless to say, Inosuke is ''pissed''.