Chapter 1 plot hole

[Koopa]

Aoi's account states that her and Sakura were in the dining room when they were drinking tea, this is impossible though. Because of how in monokuma's nighttime announcement clearly states the dining room is locked at night time.

[Lots Of Blue]

When Aoi said "nighttime", I don't think she was referring to the official 22-07 nighttime specified by the rules. She probably just meant that it was late in the evening.