if i'm honest yea LOL. i also knew shinjiro was going to die. i wasn't bothered and don't really mind, especially in retrospect since knowing the protagonist was going to die made me more aware of the death imagery and messaging (about life and meaning-making) in the game while i was going through it, stuff i probably would not have noticed otherwise (without a second playthrough). so overall i don't think it spoiled my experience, in some ways i think it made it kind of better by framing the narrative as one with mortal stakes. i quite enjoy series that allow perma and protag death, and coming off of persona 4 it was a really neat contrast :)