Continuity mistake: Miguel kicks and breaks a staircase railing during the school brawl. For a second it cuts to Robby. When it cuts back to Miguel, the railing is fixed.
Continuity mistake: When Dan and Louise are talking about graduation moments in the kitchen, Dan's iPhone keeps changing positions in his shirt pocket. In some shots, it's upside down, and in others, it's upright. (00:07:56 - 00:09:26)
Continuity mistake: At the diner when Tsunoda and Retsuko are talking, Tsunoda pulls out a red phone with a white heart on it from her purse. In the close up she is pulling it out with her left hand and the phone is horizontal with the heart on its side. It then cuts to a wide angle and suddenly she's holding the phone upright with both hands.