the robin jumping out the window scene specifically is when i first picked up on robins suicidal intent the first time, and I want to talk about how that scene communicates that. first theres the need to not let robin jump off the building, zoro explictly says "don't let her go" when robin is teering on the edge of a building. the way everybody reacts is as urgent as possible, and with the focus on her feet and how she jumps off willingly when commanded by lucci when falling from tall buildings is such a common way to commit suicide, the fact the confrontation at galley-la seems so final, and is stated to be final by zoro, nami and luffy. "this ends here". and it ends with robin falling willingly off a very tall building.
nico robin wants to commit suicide, she justifies it with saving her friends and a literal manifestation of her trauma chasing her, but she wants to commit suicide. this is established as a pattern by her first introduction. it ultimately comes down to the same thing usopps storyline does in the same arc, which is that someone can be loved and love all the same but that doesn't fix their trauma, it doesn't make it go away.
so many stories, i think, are filled with this idea that love can fix mental illness, or that characters end their issues with mental health when they are loved, and i think the kicker about water 7 in general, is it's articulation of that not being true. love can make serious mental health issues more complicated, being loved and being mentally ill can and does exist at the same time.
its why water 7 and enies lobby works as a sequel to skypeia. because now these characters with mental illness are loved- so obviously and concretely and that doesn't fix anything. but it's not like it doesn't matter, it does. they navigate their issues because they want to go back to the people they love.