It is a bl worldhopping novel with a system (maybe). At the start we see that the MC is forced to stay in a room by a person who claim he loves him. He is yandere. The MC commits suicide but the ML laughs and tells him that you cannot escape from me. The MC told by the system that he forget until he living in this world I am not sure about this part. In arc 1 MC loves painting the ML sees him painting and finds that he have obsessed feeling feeling towards the MC. The MC does nother see the ML because he is focused on his painting