Ep. 6: Tsubakiyama Challenges Oniyokozuna to Sumo After Canary Incident at Otokojuku

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Tsubakiyama Kiyomi struggles with the physical demands of Otokojuku training and attempts to flee at night with his pet canary. He is intercepted by Second Year student Oniyokozuna, leading to a challenge. Staff wake First Year students at 4am to witness a Spike Thicket Sumo contest between the two. Tsubakiyama is losing badly until he discovers Oniyokozuna ate his bird, prompting a vengeful comeback aided by Momotaro to win. Later, while mourning his bird at its grave, Tsubakiyama is attacked by other Second Year students. Momotaro intervenes again, helping Tsubakiyama find strength and courage. Consequently, he decides to stay at Otokojuku rather than leave.