Help mind the manhwa

So she is a purple/black haired fl. she somehow gets transmigrated to a character of her psychological story. Where the main fl is someone else who is pure cute etc, and there is a harem of 4 guys who all are crazy/psycho etc. she gets transmigrated here, and all 4 guys hate her, especially bcz the og fl keeps following her around (turns out she likes this transmigrated fl). They also went to a school trip ig, where there was some horror event, one of the guys in harem is really scared of ghosts etc, there were some other events as well, i think the transmigrated fl and another harem guy falls off a cliff etc. its a modern era story. The story was very good but poor tl. I think its a naver webtoon story. Plz help me find the name