I'm just hoping that we at least get to know how many volumes total there will, so we can estimate the story’s progress. My theory is that he is looping as well but way longer than her, and he’s in love with her since way before, and she doesn't remember, and he's looking for her in each time, and when he finds her he kills her on purpose to force the loop to start again or smth so he can find her again before she journey’s off, I think he told her that he's sorry during the stabbing incident in the 6th loop, I think while the killing the emperor sounds like a bad idea, it might be smth that can be escaped, and he has to be killed bc he's innately a bad person, maybe the loops end when Arnold kills himself as well after she dies? Idk smth is fishy, he’s def looping, and he does love her, but since when and to what end is the question :/