The sensei is a megalomaniac! He talks badly of students behind their backs to the other students. If you have children, he won't understand if they have homework or don't want to be at karate for two hours a night! So forget about your children getting their homework done. He publicly criticized one student who had an exam to study for and didn't let them out early. He mocked one of the senior students so badly one day that the guy quit! He plays favorites BIG TIME! If your child doesn't show promise, he won't give them time of day. He also doesn't respect your schedule. He was always insulting people (yes, insulting them) if they had family coming in. Also, don't give him your phone number. He will harrass you with text messages and phone calls if you miss class! this guy is a real psycho!