Quiet and reserved, 15‑year‑old Yu‑yu Kondou is always pushed by his eccentric sisters to meet their wild demands. One day they force him to dress in women's clothing for their amusement, causing him to flee home. After a string of unforeseen incidents, Yu‑yu meets Megumi Ookura, a cheerful girl who brings him into Team Blackout—a crew deeply engaged in the card game Cardfight Vanguard.
As he bonds more with Team Blackout members—Danji Momoyama, Zakusa Ishigame, Tomari Seto, and Megumi herself—Yu‑yu uncovers a thrilling new realm he could never have envisioned without these newfound allies. Their camaraderie fuels his confidence, turning everyday struggles into exhilarating challenges that reshape his outlook on life.
