Rakudai Ninja Rantarou落第忍者乱太郎; Ninja Rantaro; Rakudai Ninja Rantaro

Rakudai Ninja Rantarou is about a boy who wishes to become a chou-ichiryou-ninja (aka, the number one ninja). There is only one problem: he keeps failing. Together with his friends, they encounter mishap after mishap as they seek to eventually graduate from the first grade.