Memoriess's feed

Okey I’m really lost rn i was watching a tiktok and it was on about this manga but I refreshed by accident there’s this boyfriend whose a phycho and is really tocix he’s the ex he has like blue hair I think kinda dark blue but I think later she gets with person with like orang ish hair kinda looks like rengoku and I coukdnt tell if it was a bl or a normal manga the mc girl or boy has like light blue hair Any helo sorry for being very vague