Continuity mistake: Whilst everyone is eating breakfast, the boy puts some rice in a wrap, and then places it in his mouth. He is holding the food in his right hand when he does this, but when the shot cuts, he is using his left hand. (00:12:56)
Continuity mistake: When Sensei raises the bowl of noodles toward his mouth so that he can drink the broth, the chopsticks he is holding are positioned outside the bowl. The camera changes angles and the chopsticks are now suddenly in the bowl. The chopsticks that Gun is holding also go from outside the bowl, to inside the bowl in between shots. (00:06:37)
Continuity mistake: When Gun is having lunch with the Sensei, Gun picks up a bowl of noodles as well as two chopsticks. At first, the two chopsticks are facing outwards. But in the next shot, the two chopsticks are facing inwards toward the bowl. (00:03:53)