ooohhhhh shit. Mitsushima has good crime sense.
Mitsushima's going to start taking counter-time travel precautions.
Like the bad guy from summer time render.
But how would he deduce time travel when the more likely thing is a mole or a bugged phone. I guess he'll maybe see security camera footage of Ao appearing out of thin air.
But even if he sees that footage, it will be erased if Ao repeats the day one more time.