trying to find isekai yaoi

im trying to find this manga i read (i think) a few years ago. the premise was a reborn into a romance thing as an npc (or maybe a rival?), school setting. i think he tries to get the og mc to end up with his favourite character. his fav chara ends up falling in love with him and becoming very obsessive, i think they fuh a lot. at one point he gets told that hes holding back ml (by family or smth) and he gets told he has to disappear from ml's life, and mc transfers to a different school. ml gets (obviously) mad and tries tracking him down, and once he finds where mc went, he also transfers to that school. mc tries avoiding him (?) and eventually they get back together and fuh again. hope this is good enough explanation ヾ(❀╹◡╹)ﾉ~