Yeah, it must be. From what I gathered from the raws, no one else knows about what he's up to. Basically, he is just waiting for the MC to fall in love with him to let him go because that way they can be together and the MC will not dare to tell anyone the truth in order to not be separated from Bit chan. The good old nurturing dependence strat xD As to whether there are physical copies, I really don't know.

For anyone who is curious, I read the raws and Bit chan is doing this simply because he is in love with the MC. There is no deeper reason. This is no revenge plot. Bit chan is just a good old yandere lmao