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Protagonist of the series and a student at Butei High School. He was ranked Level E (lowest combat rank) due to missing the third term's final examination. However, when he is sexually aroused, he enters a state known as "Hysteria Mode" in which his cognitive and physical abilities increase to around thirty times his normal state, which allows him to perform feats of near-superhuman strength and skill, such as accurately shooting up the muzzle of an enemy gun, swinging his knife at supersonic speeds, and accurately shooting enemy bullets out of the air.

Source from Wikipeida