Luckyy

i rlly need a story that can satisfy my craving!! I want something where theyre both in love but the top is way more obsessed. and i would prefer if there is an arc where they stay apart for a while like maybe the bottom has to leave or run away for a reason and top goes a bit crazy looking for them lollll can be straight or bl pls!!

Pls help me find!
It was a straight romance and the fl was isekaied into a game (or could be a novel i forget) and basically the system forced her to act as a villain in this huge sorta haunted mansion where the ml would come visit and if he stepped a foot in, he would be trapped in their until he cleared the game. Throughout the story, the fl has to make things harder for him or she suffers instead (i think) but she has moments where she ends up helping the and by the end, the ml becomes obsessed with her and even says he won’t leave the mansion that he once hated so that he can stay with her forever. I think he had something like a corruption bar which the fl also had to keep low in order for him not to go crazy and lose the game. I would rlly appreciate if anyone knew the name!! sorry my memory is super foggy.