Exactly as a person who has probably played half of all the yandere games here, plots and certain stuff is always kinda similar especially if you have other similar genres, especially the start of a game and endings too.
I just think playing any game especially one that is much more specific than the usual genre (yandere) is gonna have similarities and there is nothing wrong with that. Kind of like paper's please and there is something wrong with my neighbor who have the same game mechanic but will probably go very different. So this nitpicking is really weird especially since bingzi (like every other yandere creator) has overlapping similarities to other yandere games before theirs lol because nothing is 100% original anyways.