Gaten na Aitsu - Manly Construction Training

1-3. Gaten na Aitsu The son of the owner of a construction firm is harassed by his seniors in school. His father's live-in worker happens to pass by while he was being assaulted... The story continues in volume 1, chapter 5 of Play Boy Blues. 4. P.B.B. Shinobu and Junsuke are still living together e