The introduction to Legoshi. He's portrayed as a creepy, silent outcast in the eyes of his herbivore classmates, and terrifies Els...only to reveal he's delivering his deceased friend's love letter. And when Els wants to make it up to him, Legoshi brushes it off, saying he's used to being feared and hated.
Tem's sudden death really hits harder with Legoshi's flashback of him putting the love letter back into his locker.
"When the time comes, I'll tell her how I really feel!"
The reader's first introduction to Haru shows how much of a social outcast she is. The day ends with her giving up to death when Legoshi grabs her (though she manages to run away).
Meteor Festival Arc
Louis is lonely even during sex, according to Haru.
When Juno breaks down after being bullied for being a carnivore.
"Do we have to get used... to this?"
The double-whammy of a Love Triangle in episode 8, in which Legoshi seeks out Haru during a power outage, only for her to mistake him for Louis - and Juno sees how smitten Legoshi is with Haru.
There's a point where Legoshi is so worried that his fixation towards Haru may stem from predatory instincts that he tries convincing himself that his feelings for her aren't genuine and that he was just "confused". It's very brief, but still sad to see, especially with the fake smile on his face as he says it to Jack (who doesn't really buy it, and even asks Legoshi if he's sure). And for an added layer of tearjerker, it could even be a case of Does This Remind You of Anything? (i.e. a gay person trying to convince themselves that they're just "confused").
Murder Incident Solution Arc
When readers finally see the full flashback of Tem's murder in Chapter 77, it's revealed that Riz the bear actually considered Tem to be one of his dearest and one of his only friends with some heavy implications of being in love with him, to the point that Riz felt comfortable enough to stop taking the government mandated drugs all teen bears are required to take to suppress and diminish his strength. Spending time with Tem made him feel so good, he didn't feel he needed them anymore. And when Riz comes to and realizes what he's done, he devours Tem because...in a very twisted way, he can't stand the thought of going on without Tem. His only friend will stay with him. One way or the other... A rare case where tearjerker and Nightmare Fuel elements go hand in hand.
Louis' emotional breakdown in chapter 95 is heartrending. After helping Legoshi escape from Riz, Legoshi insists on returning. It is obvious that Legoshi is in no shape to fight and he cannot even stand without help. Louis tries to dissuade Legoshi from going back. Legoshi makes a Call-Back to one of their earlier arguments and tells Louis that he was what kept him from becoming a monster. The statement reminds Louis of one of the last things Ibuki had told him before his death. Upon realizing he cannot stop Legoshi from fighting, he tells Legoshi to leave him out of it. All the while, Louis tries to remain detached and aloof. Louis ultimately fails when he tearfully tells Legoshi to just go. Louis is caught off guard when he feels the tears and momentarily mistakes them for rain before brushing them away, only for more tears to well up in their place. It is clear that crying is a new experience for Louis as he comments on how the tears feel. The sudden display of genuine emotion shocks Legoshi enough that he offers to stay with Louis a little longer while the latter falls to his knees, breaking down completely. Louis tells Legoshi that it is probably the first time he has ever cried and that he cannot stop. Louis's thoughts reflect on his past, an enviornment that did not allow him to express emotion. He also focuses on his apparent helplessness and remorse over the deaths of those close to him and his own personal weaknesses. Louis is so overcome with emotion it takes him quite awhile to finally stop crying.
The second anime season ending visually and lyrically foreshadows Ibuki having premonitions of his death in the season finale. the full length promo video continues into the actual death scene.
The entire scene of Tao accidentally disarming Kibi. As poor Kibi cries out and writhes in pain, Tao is absolutely panicking and pleading it was an accident as the herbivores of the drama club are very clearly frightened. Kibi cries out that he's scared and doesn't want any carnivores aside from Legoshi to help him. Even though Tao visiting him in the hospital later on is more heartwarming than anything, it's still very clear Kibi went through a lot of physical pain during his recovery and Tao suffered a lot of emotional anguish and guilt from the incident.
Life as a Dropout Arc
Revenge of the Love Failure Arc
From chapter 148, Legoshi drank some Kopi Luwak, which has the side effect of making Carnivores get a little meat-hungry. Than, Haru comes to spend the night. After waking up the next morning, Legoshi is sleeping next to a pile of red-stained fabric, implying that he lost control in his sleep and mauled Haru to death... It's eventually revealed that she's fine, and it was just some tomato juice that she spilled, but Legoshi's reaction to thinking he had accidentally killed Haru is heartbreaking.
Melon's backstory is pretty tragic when you think about it. At the age of nine, he was targeted by carnivore kids for being an herbivore and carnivore hybrid. Exhausted, he proceeded to lean against a set of bars just off the edge of a building. The carnivore kids even ENCOURAGED him to jump! and what really makes this sad is that a lot of children do actually become killers like this in real life. Then, it's revealed that what truly drove him over the edge in the first place was finding out that his mother ate his father before he could even remember him with heavy implications that she had at least a subconscious desire to eat him too, hence why he was named after food. He ended up killing his mother out of fear and anger. And this is before we learn that his mother was also sexually abusing him.
In chapter 152, we go back to Cherryton High. Things are not great. All of the school clubs have been dissolved or put on hold, and both the dorms and classes are now segregated between Herbivores and Carnivores.
Also from chapter 152, we learn an interesting bit about the world of Beastars. Apparently, most students are only taught the bare basics of history, except for a small group of elite students who are taught the "true history" of the world. Bill describes them as "bear[ing] the burden of animal society's darkness." While he speaks, we're shown Jack, sitting alone in the canine dorm room with a bag of onions, which are poisonous to dogs, implying that Jack is one of those elite students and that whatever he learned has made him potentially suicidal.
Chapter 153 shows us what it's like to be a Dog in this setting. To be bred to be more friendly, intelligent and obedient than Wolves means Jack is completely incapable of feeling sad even when he understands he should be and this disconnect is starting to make him feel like nothing about him is real at all and is just how he's been programmed to act as a species. His argument with Legoshi climaxes in Jack actually attempting suicide and resisting Legoshi's attempts to save him in a desperate attempt to prove to himself that he is capable of being disobedient.
Chapter 154 reveals through Jack's history lessons, it was actually the herbivores who were taking the war more seriously than the carnivores. The wolf soldier actually begs for the goat soldier to surrender before they eat all the herbivores and destroy the civilization they worked to create together.
Chapter 188: We suddenly get the reveal that Melon’s father is with the media. When the press pressures Yafya into talking about Melon’s hybrid heritage, the man speaks up. He’s Melon’s father, and admits his son is a hybrid. He wonders what his son has done and apparently wants to meet his son. Wow, he is so brave! Gosha is moved by the comment, and destroying all camera equipment (so that hybrid families are not insulted), he decides to help the guy meet Melon. He opens the door to the market with komodo venom and starts to drag him to Legoshi’s location. Then the bombshell is dropped: he has zero intention of speaking to Melon, has zero attachment to him, and doesn’t give a lick about the current situation. Melon’s dad nonchalantly speaks about his romance with Melon’s mom as a youthful indiscretion, and that he was unwilling to deal with the consequences of an interspecies affair- you know, after doing the deed. Then he says he left Melon as a baby because “any guy would have done the same”. No wonder Melon is so violently fucked up.
We finally get the details of the death of Legoshi’s grandmother, Toki: she purposely defied Gosha’s strict insistence on disinfecting her whenever they were intimate by getting rid of his rubbing alcohol and disinfectants just to give him normalcy, being able to love her without being constrained by his biology. She died from his venom after kissing him. Melon’s father causes the flashback with his flippant dismissal of family and children and attempts to justify child abandonment. The memory triggers him so severely, it drives him into a murderous rage that he tries to unload on the guy. Sadly, it’s also the first hint that Gosha is much more unstable and damaged than he lets on.
For the record: one panel is one of the first where Yafya possibly demonstrates genuine fear.
The Revenge of the Love Failure arc finally ends in chapter 192 with a scene that is an even combination of awesome and depressing: Yafya is finally behaving like a proper Beastar after feeling sympathy for Melon. The latter promptly attempts to murder Yafya via bite to the neck after deciding he does not deserve the sympathy. And just when they were finally feeling genuinely positive emotions like remorse. Thankfully the very next chapter reveals he was too weak to properly tear out Yafya's throat meaning the Beastar survived to continue his redemption.
Unsorted
The general treatment and complications of being a hybrid. Not only do they face discrimination, but in some severe cases, like Melon, or Legoshi's mother, they wind up with conflicting biology. And depending on the partners in question they can't even have a true family dynamic due to societal pressure, or just the instinctive urging for one to consume the other in the case between a carnivore and herbivore.
continues into the actual death scene.