From Today, It's My Turn!!

Battle Begins (1x3)

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Katsutoshi confesses his feelings to Riko, but is rejected. While feeling lost by the riverbank, he throws a stone in frustration, which hits a delinquent from Kaikyu, escalating into a fight. Upon learning this, Satoshi leads everyone in searching for Katsutoshi, and the situation escalates into a major incident involving Takashi and Shinji.