History Heartwarming / HunterXHunter

* Gon telling Killua how glad he is that he met him and Killua thinking that Gon has it backwards.

* Gon and Killua parting ways with Bisky at the end of the Greed Island arc is this and a bit of a TearJerker as well. Gon asks her if she wants to come along to meet his father, but she declines, knowing she'll become even more attached to them if she does. They do eventually meet again in the next arc, but its still a very tender moment, and one thats even more touching in the OVA series, where she tells Gon and Killua they're the best and that she loves them. D'awwwww.

* Gon and Killua parting ways with Bisky at the end of the Greed Island arc is this and a bit of a TearJerker as well. Gon asks her if she wants to come along to meet his father, but she declines, knowing she'll become even more attached to them if she does. They do eventually meet again in the next arc, but its still a very tender moment, and one thats even more touching in the OVA series, where she tells Gon and Killua they're the best and that she loves them. D'awwwww.
* During Gon's mission to rescue Killua from his family, we get to meet Canary, one of the Zoldyk butlers. The narrative takes its time noting that she sincerely wished to be friends with Killua even at an early age, but could not because the Zoldyks forbade real social interaction with him. So when he finally leaves the butler's quarters and passes her up without saying a word, it's a [[TearJerker little hard to watch]]. But when Gon, who barely knew her but still saw her need to want to help Killua, cheerily says goodbye to her on his way out, it's the [[WhenSheSmiles small smile on her face]] that she makes as Gon passes her by that makes it all worth it.

* The lengths Gon goes to trying to rescue Killua from his crazy family. Kurapica and Leorio coming along to help is just icing on the cake.
* Gon and Killua parting ways with Bisky at the end of the Greed Island arc is this and a bit of a TearJerker as well. Gon asks her if she wants to come along to meet his father, but she declines, knowing she'll become even more attached to them if she does. They do eventually meet again in the next arc, but its still a very tender moment, and one thats even more touching in the OVA series, where she tells Gon and Killua they're the best and that she loves them. D'awwwww.

* Killua vowing to protect not only his little sister([[AmbiguousGender ?]]) Alluka, but also [[spoiler: Nanika, her wishgranting alterego. Especially since this was seconds after [[TearJerker Killua told her to never come out, and reduced the poor thing to tears]]. After being called out on this by Alluka, Killua tells Nanika he was wrong and he'll always protect both of them, before tearfully asking for her forgiveness. She forgives him.]]

* In a weird, twisted way, [[spoiler:the numerous measures Illumi takes to protect Killua. Despite his upbringing, he goes to very extreme lengths to protect his little brother]].

* Gon and Killua parting ways with Bisky at the end of the Greed Island arc is this and a bit of a TearJerker as well. Gon akes her if she wants to come along to meet his father, but she declines, knowing she'll become even more attached to them if she does. They do eventually meet again in the next arc, but its still a very tender moment, and one thats even more touching in the OVA series, where she tells Gon and Killua they're the best and that she loves them. D'awwwww.

* The lengths Gon goes to trying to rescue Killua from his crazy family. Kurapica and Leorio coming along to help is just icing on the cake.

** {{YMMV}}, since Illumi's idea of protection does ''far'' more harm than good.

** YourMileageMayVary, since Illumi's idea of protection does ''far'' more harm than good.

* The lengths Gon goes to trying to rescus Killua from his crazy family. Kurapica and Leorio coming along to help is just icing on the cake.

* In a weird, twisted way, [[spoiler:the numerous measures Illumi takes to protect Killua. Despite his upbringing, he goes to very extreme lengths to protect his little brother]].

** In the manga, when Gon is listening to the message Ging left for him and the recording says that if he keeps listening Ging will tell him about his biological mother, and Gon shuts off the tape without a second of hesitation, knowing that the moment he shuts the tape off it will automatically erase itself. When Killua asks him why, Gon tells him that he doesn't care about who his biological mother may be, because in all other respects his real mother is Mito (and unbeknownst to him, Mito is listening in and hears this).

** In the manga, when Gon is listening to the message Ging left for him and the recording says that if he keeps listening Ging will tell him about his biological mother, and Gon shuts off the tape without a second of hesitation, knowing that the moment he shuts the tape off it will automatically erase itself. When Killua asks him why, Gon tells him that he doesn't care about who his biological mother may be, because in all other respects his real mother is Aunt Miko (and unbeknownst to him, Miko is listening in and hears this).

** And then after that, there's Gon saying goodbye to Aunt Mito. Made even more heartwarming in the 1999 anime when he tells her that as far as he's concerned, she isn't just like a mother to him, she ''is'' his mother.

* Chapter 339 that is all

* From the first chapter, all of the forest creatures giving Gon a farewell before he leaves for the Hunter Exams.

* Meryem goes on a speech on how sociopathic he is and is about to kill Komugi, then he sees her being attacked by a hawk. He kills it and asks why she didn't ask for help, she answers she didn't want to bother anyone. It serves as heartwarming development of character for someone had previously being perceived as a complete psycho.

* Chapter 339 that is all

* At the end of the Greed Island arc Gon decides the first thing he's going to do when he meets his father for the first time? Introduce him to Killua: his best friend.

** Before this point, Kurapika is extremely depressed because he believes that the Phantom Troupe had been eradicated, eliminating his [[RoaringRampageOfRevenge primary endeavor]]. Kurapika has not seen Leorio, Gon and Killua for six months, and soon he reunites with the others at a park. Gon and Killua are having an ice-cream eating contest when he gets there, and, on sight, it is obvious that Kurapika is upset. Gon cheerfully tells him that he should be happy. Now that he doesn't have to worry about the Troupe, he can comfortably recover all of the eyes of his murdered Clan. Then, as Kurapika gets over his shock, Killua promptly [[CrowningMomentOfFunny shoves a pie in his face]]. Enter Leorio, and Kurapika [[WhenHeSmiles laughs for what might be the first time in a while]].

** Before this point, Kurapika is extremely depressed because he believes that the [[CompleteMonster Phantom Troupe]] had been eradicated, eliminating his [[RoaringRampageOfRevenge primary endeavor]]. Kurapika has not seen Leorio, Gon and Killua for six months, and soon he reunites with the others at a park. Gon and Killua are having an ice-cream eating contest when he gets there, and, on sight, it is obvious that Kurapika is upset. Gon cheerfully tells him that he should be happy. Now that he doesn't have to worry about the Troupe, he can comfortably recover all of the eyes of his murdered Clan. Then, as Kurapika gets over his shock, Killua promptly [[CrowningMomentOfFunny shoves a pie in his face]]. Enter Leorio, and Kurapika [[WhenHeSmiles laughs for what might be the first time in a while]].

* Kurapika revealing his powers to Gon, Leorio and Killua. The act of doing so was a great risk. One of the Troupe members, Pakunoda, had the power to read minds. If they were to be captured and Pakunoda were to read their minds, all of Kurapika's weaknesses would be exposed. Gon begs Kurapika to point a nen arrow at his heart so that it would kill him if he were to reveal his secret. Killua and Leorio follow suit, agreeing that it was a good option. Kurapika, however, refuses their offer. He says that he would not mind it even if they somehow managed to reveal his secret. He had [[PowerOfTrust good friends]] ..

* Kurapika revealing his powers to Gon, Leorio and Killua. The act of doing so was a great risk. One of the Troupe members, Pakunoda, had the power to read minds. If they were to be captured and Pakunoda were to read their minds, all of Kurapika's weaknesses would be exposed. Gon begs Kurapika to point a nen arrow at his heart so that it would kill him if he were to reveal his secret. Killua and Leorio follow suit, agreeing that it was a good option. Kurapika, however, refuses their offer. He says that he would not mind it even if they somehow managed to reveal his secret. He had good friends ..

* Kurapika revealing his powers to Gon, Leorio and Killua. The act of doing so was a great risk; one of the Troupe members, Pakunoda, had the power to read minds. Gon and Killua had already been captured once, but at the time, they hadn't known that Kurapika was the 'Chain-User'. If they were re-captured and Pakunoda were to read their minds once more, all of Kurapika's weaknesses would be exposed. Gon begs Kurapika to point a nen arrow at his heart, so that it would kill him if he were to reveal his secret. Killua and Leorio follow suit. Kurapika, however, refuses with some absolutely heartwarming words:
---> '''Kurapika''': Even if one of you ends up revealing my secret, I will have no regrets ... I have good friends ...

Killua vowing to protect not only his little sister([[AmbiguousGender ?]]) Alluka, but also [[spoiler: Nanika, her wishgranting alterego. Especially since this was seconds after [[TearJerker Killua told her to never come out, and reduced the poor thing to tears]]. After being called out on this by Alluka, Killua tells Nanika he was wrong and he'll always protect both of them, before tearfully asking for her forgiveness. She forgives him.]]