When Gakushu fainted when lost in battle, his head was on the left. When Ryomo came in, his head was on the right.
While Hakufu was fighting at Yoshou Private School, her school uniform was fine, the next shot, you'll see that her uniform was torn but a couple shots later, her uniform got torn by her enemy. It appears that the artist made a mistake and accidentally drew Hakufu with her uniform ripped before it actually happened.
When Tei was telling Ryomo that he was going to make it when he in battle, he said he was seeing triple. But he was seeing double.