History's Strongest Disciple Kenichi [Manga]

Shirahama Kenichi is a book lover who has just entered high school, but he is often bullied by others. One day, he became good friends with the new transfer student, Fuurinji Miu, who was also looking for a friend. Kenichi was shocked at how powerful she is at first, but he is still somehow attracted to her…so he later goes to the dojo of her family and starts a training that will change his life