Kawano Kei

Sekai Isshin was trained in Kenpo by his grandfather for 10 years but has never won a single match. When he entered high school, he thought he finally fulfilled his dream of joining a baseball club. But he was given a club entry challenge by Souza Naoya, who hailed from Senior League. Using his kenpo techniques, Isshin cleared the challenge. Thus, a weak baseball club begins to change after a weak amateur joins them!

Kurose Ryotaro is a high school student who dreams of becoming a teacher. He admires his teacher, Mr. Shiratori, but is subjected to severe bullying every day. When the situation reaches an unexpected extreme, so is the outcome unexpected… and now, Kurose finds himself in the perfect position to teach his bullies an extracurricular they'll never forget.

A boy named Yuuto Seo moves from Hokkaido, where he's lived all his life, to Tokyo. He first fears he must give up speed skating, his hobby, but he soon finds places to skate and people to skate with. The second series written by Hotta Yumi (creator of Hikaru no Go).