Happiness-kun

(from ebookjapan):
Happiness-kun, a boy who works hard to keep his baby ombudsman. It vividly depicts his humorous life in 4Koma. The title story is included in three versions: the "Weekly Shonen Magazine" version, the "Kosei Shinbun" version, and a Yamadaya version published in an unknown magazine. The book also includes "Mei Tantei Q Hei," a short story that challenges readers to solve a mystery, "Manga Yosei," which was popular in "Shonen Gaho" magazine, and a rare manga spread from "Manga Ou" magazine.