Question about Danganronpa 2, Trial #5 (Spoilers)

Peko interfered willingly and willingly murdered Mahiru. Nanami didn't, she threw a grenade that she had no way of knowing would be dangerous, while Komaeda put poison in there knowing it will lead to his death.

I don't think it matters whether it's willingly or not, when Monokuma has never been one to care about such excuses in the first place. He makes it clear at some point that he considers all kinds of death murder irrespective of their nature as intended or accidental. The only time a death isn't ruled as murder is when someone dies from illness of which the chances of happening are low anyway. It's about who lands the final killing blow, something both Peko and Chiaki undeniably did.

Also, in 2-4, Nekomaru was the one who broke the handle and not Gundam, and yet Gundam was the blackened because he was the one who placed Nekomaru on the handle.

Well, it's suggested in the trial that it was never within Gundham's intentions to have the door's handle break since it ended up being a clue that helped everyone figure out his trick and he miscalculated when he didn't account for Nekomaru's weight, so technically he simply put him up there to fall and that was the killing blow, though the door's handle did end up breaking at the end regardless and I'll concede that this might poke hole in my logic. However, I'm reluctant to because the circumstances are different.

/r/danganronpa Thread Parent