@yukichii can you blame him? If I get isekaid I would said the same, I know nothing nor know about the owner of the body, if their friend or partner tried hitting on me I would feel guilty and eventually try to tell the truth. And he want to go back to his world, it make sense for him to explain that he's not actually the owner of the body.
They explain that the story's already messed up anyway, even if they play along with the story I doubt they will actually go back to their universe
They explain that the story's already messed up anyway, even if they play along with the story I doubt they will actually go back to their universe