じょっぱれ瞬! [Joppare Shun!]

Joppare Shun! is a short-lived manga series from Kōdansha, launched in 2007 and still ongoing in name, though it ran for only two issues. Rooted in the energetic spirit of its title—"joppare" evoking a bold, defiant attitude—the series centers on a protagonist named Shun, navigating a world of youthful rebellion and personal growth. While details on its full scope are sparse, its brief run and enduring presence suggest a cult appeal among fans of slice-of-life or action-driven stories from that era.