Kuroko's Basketball - I’m Telling You, I Can’t Wait (Doujinshi)

When incoming first-year student Taiga Kagami joins the Seirin High basketball team, he meets Tetsuya Kuroko, a mysterious boy who’s plain beyond words. But Kagami’s in for the shock of his life when he learns that the practically invisible Kuroko was once a member of “the Miracle Generation”— the undefeated legendary team—and he wants Kagami’s help taking down each of his old teammates!

(Source: VIZ Media)

Note: Includes one extra chapter.