Hikaru no Go: Sabaki no Ikkyoku! Inishie no Hana yo Sake!!

Synopsis

While spending time with friends, Hikaru Shindou's day takes a turn when a baseball shatters a window and a treasured teacup. His attempt to find a replacement leads him to an antique shop where he encounters a dishonest merchant. Guided by his ancient mentor, Fujiwara no Sai, Hikaru feels compelled to address the shopkeeper's unethical practices.