The reason i called her a yandere is because at the end, she becomes a prostitute, but keeps sending love letters and flowers to the MC's house. ofcourse he just tosses them immediately. i guess stalker may be a more fitting term.
he meets the main girl again at a graveyard (i think she is a highschooler and currently lives with her family (i assume foster family), they talk (don't know what they're saying) and go their separate ways. I don't know what they said so i can't say for sure, but to me it feels like he doesn't end up with anyone.