Shina Ayumu

Hiroki's younger childhood friend . She is the last heroine to appear in the story . She admired strength ever since Hiroki saved her from being bullied when she was young, and they went to a karate dojo together. She liked Hiroki and even confessed to him when she was young, but Hiroki saw Ayumu as a guy and didn't pay much attention to her, but after seeing how sexy Ayumu has become, he came back and regretted his actions. She is a senior and junior in the same judo club as the black transfer student .