Please don't list this on a work's page as a trope. Examples can go on the work's YMMV tab.
Tear Jerker: Noragami
Chapter 1: Just much Mutsumi is hated in her class. We were never given any reason for their hatred, they just hate her. With some of them even wanting her to kill herself. It is not helped that they bullied her to release stress from exams.
Chapter 11: We finally learn why Yukine, was being such a jackass. He died at a young age, and was jealous of the people still alive. Feeling they had family, a past, friends and a future. When he had nothing.
Chapter 14: Just Suzuha. He admits that due to the large amount of Shiki that Vaisravana has, he's not really called anymore. He stills keeping a dying tree alive as it was a memory of a living girl, that he loved but she has long since forgotten him. It is really hammered home when Kuguha just tells Suzuha, he is completely alone. No human will remember him, and even his goddess has forgotten him. It was so effective Suzuha crossed the Despair Event Horizon and let Nora kill him.
Chapter 19: As Yato slays the massive ayakashi formed from Bishamon's corrupted shinki, they cry for their master in their last moments, and Bishamon tearfully begs Yato not to kill them.
Chapter 23: The flashback showing Kazuma's life in Bishamon's first clan of Shinki. When Bisha falls ill, the shinki begin throwing accusations at each other. As a result Touma, the shinki Kazuma was closest to, is falsely accused of being the culprit after standing up to the then-Lead Shinki (indirectly implied to be the culprit herself). The other shinki then threw her into a pit of gloom as Kazuma watched, powerless to save her.