Moments to make you reach 100% Sadness very quickly.
- And on that note, 100% Sadness features Mob crying his eyes out because after his ???% mode hands Teru his ass, he has flashbacks to the incident that led to his desire to suppress his esper abilities in the first place, a period where a bully knocking him unconscious led him to believe that he seriously hurt his little brother. He continues to cry uncontrollably, hunched over on all fours, looking as if he's begging for forgiveness as Black Vinegar Middle School rebuilds itself in the background.
- Speaking of the fight against Teru, his Unstoppable Rage against Mob after he gets his "haircut" feels almost as if he's trying desperately to convince himself that he's right almost as much as he's trying to convince Mob. Even as he chokes Mob to death he begs him to use his powers, almost crying. Just so he doesn't have to admit that his entire life is a lie.
- To a lesser extent, 100% Rage, the first explosion we see. It's undeniably badass to see Mob kick around the super-powerful Dimple like a football, but throughout the whole thing, Dimple's hurling insults at his enemy, accusing him of being an emotionless monster... and Mob never once responds. It's a subtle reminder of just how much he hates his powers, and to some extent, himself. And then there's his line as he finishes Dimple, showing just how far from a typical shōnen hero he is:Mob: I'm... terrible.
- The kickoff of The Great Cleanup — the student council decide to get rid of their delinquents by any means necessary, and their first victim is Salt Middle School's Banchou, Tenga Onigawara, by way of framing him for stealing and licking the female band students' instruments. The way the whole school turns on him drives him out of the classroom, including a girl who he felt he could always trust to have his back, leads him to run from the classroom, ruining his perfect attendance, and the next scene features him with a Thousand-Yard Stare as he seeks refuge in the meeting room for the Telepathy and Body Improvement Clubs.
- Mob's attempt to be elected as President of the Student Council. There are four candidates and each one gets five minutes to campaign. Mezato has written his speech and helped build up Mob's confidence to build his appeal to Tsubomi. Mob gets onstage... and goes completely still for five minutes. Poor Mob goes into a state of total embarrassment. Even the Body Improvement Club can't pull him out of his misery afterward.
- Near the end of the episode, Emi's "friends" poke fun at her writing talent and tear apart her script for laughs while Emi passively allows them to. Mob walks in and picks up the pieces despite the girls insulting him for his pointless endeavor, thus leading to the image above. This also counts as a Heartwarming moment since Mob's kind words and actions leave an impact on Emi.
- The months spent inside the Lotus-Eater Machine. Mob is transported to a world where he has no friends, no family, and no powers. The events he experienced are all but stated to have happened verbatim to one of Minori Asagiri's victims, and Mob is just experiencing it in first person. It's equal parts horrifying and depressing to watch.
- Asagiri was completely conscious too, but since Mogami only made recreations of memories, she can only sit back and watch as she slowly realizes what a horrible, horrible person she's been most of her life. When she's finally exorcised, all she can say is that she really is that terrible in real life... and then she immediately breaks down, says she's sorry, and asks for forgiveness over and over and over...
- Reigen becomes quite depressed when he and Mob get into a fight, Mob leaves his employment, and he realizes that Mob is perfectly fine without him. It doesn't help that Dimple tells him that Mob doesn't care about him. The arc gets sadder from there; it seems that Reigen is actually doing well in getting the attention that he craves, only to be publicly humiliated on live television, called out for being a fraud, and stalked and harassed by the media.
Ive always known... from the beginning. My master is a genuinely good guy.
- The anime starts playing Gray by Sajou no Hana just as Reigen encounters Mob and Dimple, which was more than enough for this scene to be emotional. The character acting is extremely realistic, with Reigen tightening his fist in anticipation before Mob says the next line, surprising Reigen to the point of tears. Essentially, the combination of the rawness of emotions and the music make the perfect pair.
- Mob's panic when he comes back from Salt Mid's Marathon Festival to see his house burning down in flames, complete with the charred corpses of his family. The corpses turn out to be psychic constructs, and his family is actually safe and sound, but for a moment, the sheer rage and sadness he feels drives his emotions up to their ???% levels without Mob falling unconscious.
- The animes execution of this scene is also astounding, conveying all the emotions the manga did. You could feel the anticipation when the door opens and the music stopping abruptly. You could hear the desperation in Dimples voice as he warns Mob to not look at the charred corpses of his family. Then, Mobs eye flashes red with rage, as everything reverted to a monochromatic color scheme. The percentage goes far beyond 100%, too. It really sends chills down the audiences spines. Thankfully, theyre fakes.
- Serizawa's Dark and Troubled Past. He was born with incredible powers but without a master to properly guide him, he easily lost control of his powers and endangered anyone who was close to him. This led to him isolating himself in his room for 15 years and was only able to leave after finding a master in Touichirou Suzuki. After Mob points out that he's being manipulated, Serizawa breaks down in tears over what he would do with his life if he didn't have Claw anymore.
- 100% Shame. When Touichiro points out that Mob is enjoying himself in using his power, he looks down to see Ritsu's face and is immediately ashamed of himself.
- Most of the "Dream" omakes are pretty funny, with the exception of Shou's. Shou flashes back to him first revealing his psychic powers to his mother, who apparently bursts into tears offscreen, most likely horribly depressed that her son has psychic powers like her husband, who has become distant and cruel.
- The Divine Tree arc is extremely sad for Mob, featuring things like his beloved younger brother and Reigen both being hypnotized and abandoning him.
- Mob's fight against Dimple/Lord Psycho Helmet is very emotionally draining. Perhaps the height of this is Mob being forced to hurt his friend Teru, and the emotional pain of doing so and knowing that he is most likely going to have to kill Dimple eventually causes Mob to cry.
- Following 100% Trust, Dimple tries to get Mob out while Lord Psycho Helmet tries to take him down. When Mob comes to, temporarily blind and barely conscious, he asks if they are home to which Dimple replies that Mob needs to make it back himself because he has somewhere else to go. When Mob says he can't move Dimple keeps encouraging him, eventually casting hypnosis on him for the first and only time in the series to help him run away. He then tells Mob that there's something he needs to take care of, as the panel zooms out to reveal that part of Dimple's body has been blown away.
Dimple was a friend.
- Mob walks out of the Divine Tree while unable to see what was really going on even as he turns to wave goodbye to Dimple. The spirit then makes his last stand against Lord Psycho Helmet, and although Dimple is eaten he appears to overpower it. The Divine Tree is ripped out of the ground and hurled into the ocean, with Dimple's fate left unknown. Mob watches the event on the tv, but like the rest of the citizens his memories have been wiped out. Despite this he ends up crying himself to sleep, subconsciously knowing what Dimple did.