In chapter 74, it’s so hard not to cry during the scene when Hisana and Rukia are in the bridal room.
If you normally cry at weddings it's even harder.
The author even admits to crying while writing the scene
Ikkaku’s death. The author even goes and writes in a Hope Spot and it’s just too cruel. When it was stated that there would be deaths on both sides of the war he really meant it.
Talbumosuke's death scene can be this who liked him, which this troper did. It would not have been nearly as eye wetting if he hadn't faced his death with dignity like he did and then you remember that Talbumosuke lost his family and that, besides the Espada, he really was alone once Lelouch took away his family and Aizen. The poem in his locket even shows that he even knows that he is still a Soul Reaper and that he truly believes he has made the right decision. The final nail in the coffin is the picture with him and Mia with the words "The future I desire" scrawled on the opposite side. This troper lost control and cried for a bit.
From the Reapers and Heralds arc: Yachiru asking her Zanpakuto one simple question "Why?". Just the thought of thinking of Yachiru being held by her hair, battered and bruised by a person she trusted, who she thought would never betray her and of course when her Zanpakuto breaks down and cries out My God, What Have I Done? it was too much for this troper to handle.
In order to prove Byakuya his loyalty to Muramasa, he has tokill his children. He very reluctantly along went with it and so far it is unknown if Kyo and Isao are dead.
Mari’s second death as her life force finally gives out. Poor Yuna.
In a way that reminds you of the end of Azumanga Daioh the end of the Farewell Ichigo arc has Ichigo and his nakama going off to college to start their adult lives. Yuzu’s sobbing just adds to the effect.
The death of Cornelia’s Mom. Considering what is in store for her in the future, we know this is just one of many tragic events in Cornelia’s life.
The description of Cornelia’s Heroic BSOD after Marianne’s death and the subsequent scenes, such as her wailing on Guinevere and breaking down and crying in front of the TV when she’s watching old videos and remembers that she told Marianne she would always protect Lelouch and Nunnally.
The Within Zero’s Shadow arc. Just...The Within Zero’s Shadow arc. The author even went so far as to put a message warning folks about how depressing it is, several times. Although chapter 163 deserves a special mention Lelouch having to perform Euphie’s Konso and everyone’s reaction to the SAZ massacre.