Well, this was an unexpected explanation. Two chapters before that one, I commented that it was bothering me that he was having zero reactions about her death.
i don't even know what is going on anymore, mc doesn't seen to care that much about the real miyu-chan but for some reason he is still kind of chained by her past self
I'm on board it's the MC train and like a good liar, the first person you fool is yourself. If you believe the lie, embody the lie, live the lie, the truth is killed. Truly a Dr Jekyl and Mr Hyde.