Manga Okaa-San (10-Sai) To Boku My mother is 10 years old. ; Okaasan (10-sai) to Boku ; Okaa-san (10) to Boku. 5 (votes: 1) 1 2 3 4 5 Subscribe Read later Information Chapters: 21 Status: Ongoing Genre: Comedy , School life , Seinen , Slice of life Description: Haru-kun is a transfer student who moved into a new town with his mother. One day his mother suddenly turned into the same age as him. Show description Read manga from start Read the last chapter When chapter 19 comes out?