Ikkyuu is a little boy training to be a monk at Ankokuji Temple. Known for being mischevious and bit of a troublemaker, but also extremely smart, Ikkyuu constantly thinks of new ways to outwit his frustrated teachers, helping others at the same time.

Source: ANN

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Side story: Ikkyuu-san to Yancha Hime
Side story: Ikkyuu-san Haru Da! Yancha Hime
Side story: Ikkyuu-san Wide Ban: Ooabare Yancha Hime
Alternative version: Congming de Yixiu: Fan Dou Gongzhu