Tetsuya Chiba Short Stories - Shonen Manga

(from ebookjapan):
Ryo Kunii, a rambunctious but kind-hearted junior high school student, supports his family by delivering newspapers. However, due to poverty, his younger brother Ken is unable to pay for school lunches, and Ryo readily accepts the responsibility, saying that he will take care of it. Then money goes missing in Ryo's class, and Ryo is suspected... This is a collection of three heartwarming pieces, including "Mosa," "A Story of Ink," and "Firefly Minako," which depict the anguish of adolescence.