Kongou Tsuyoshi

Tsuyoshi Kongou (金剛 剛, こんごう つよし lit. Kongou Tsuyoshi) is one of Matsuzaki's male students. He has a muscular build and a large physique. Previously known as a violent, self-centered and delinquent student, he raised a lot of issues in the past because of his behavior.

Appearance
Kongou used to sport a spiky hair added contrast to his villainous face. He wears the typical PK Academy uniform but with his sleeves cut in a messy way. However, he turned bald after Kusuo used his power to the barber whos cutting Kongou's hair and later it turned longer but not spiky anymore. He now wears glasses and his uniform is neat.

History
Kongo used to be a delinquent until Kusuo used his powers on him with thought projection. He showed some images of how Matsuzaki stayed late after school to apologize for the complaints he received about Kongou, and how Matsuzaki always helped others. Kongou felt bad and immediately decided to become a good student.

Upon standing on the stage during his graduation, he conveyed his appreciation aloud and impressed the students, teachers, and parents. His grades were also high enough to allow him to be accepted at Tokyo University.

Trivia

 * character profile was found in the character guidebook.
 * We can see his mom cheering upon him and crying on Chapter 140 while Kusuo mentions that he's identical to his mother.