One day, Kunio rescued a student, Kurebayashi, who was not feeling well on the street. Kunio's heart flutters at the sight of her dainty appearance and sexy behavior, but Kurebayashi turns out to be a Red Lion, an assassin sent by the Kanto Lion Union, a gang of delinquents led by the Lion King. It was Misuzu, the female guardian of Taiyo High School, who sensed Kurebayashi's ruse.
ある日、道ばたで具合の悪くなった女学生・紅林を助けたくにお。その可憐な容姿とセクシーな振る舞いにくにおの心は激しくときめくが、紅林の正体は、獅子王率いる不良軍団・関東獅子連合が差し向けた刺客・紅獅子だった。紅獅子の策略を察知した太陽学園の女番長・みすずだった。
