The birth of a younger brother and older brother basketball tale now starts! From that day, the younger brother and older brother's journey to become the "world's best basketball player" began. Being compared to his prodigious brother Riku and tired of his everyday life, Raimu works up his courage and decides to start playing basketball!

Drawn by the previous assistant of Haruichi Furudate (Haikyuu!!) and recommended by the master himself, an acclaimed basketball manga!