|Name (kanji/kana):||紫小次朗 (Murasaki Kojirō), むらさき こじろう (Murasaki Kojirō)|
|Affiliation(s)||Horyou High School|
Murasaki Kojirō (紫小次朗 Murasaki Kojirō, むらさき こじろう Murasaki Kojirō) is a third year student of Houryou High School. His debut in the Kunio-kun franchise is in Downtown Nekketsu Baseball Monogatari: Yakyū de Shōbu da! Kunio-kun, where he takes the role of the captain of the school's baseball team. He has purple hair and is nicknamed "The Beautiful Swordsman". He has feelings for Gōda's sister Saori.