Responses
https://www.mangago.me/read-manga/how_to_escape_the_clutches_of_an_obsessive_top/
Based on your description but idk if this what you are looking for
beta
what yaoi was uh the mc was isekaied i think into a bl novel esper universe thingy and he try to avoid the ml cus he dangerous and (supposedly) obsessive with original mc in the novel but now ml is obsessed with the current mc, i can barely describe ts