If I had kids of my own, you'd better believe I wouldn't be half as lax with them as yours obviously are with you! The problem is, people are having kids when they're way too young. Before they've become proper adults, they're poppin' out babies of their own! And bad parents raise bad kids. That's why there are so many brats like you in this world!
Mikio is an adult man of above average height and build. He has short, brown hair, and grey eyes. He wears a white and red tracksuit with yellow shoulders and a black logo on the right chest area, as well as a black shirt underneath.
Mikio is a 29-year-old P.E. teacher at Kisaragi Academy Senior High. He's responsible for physical education and gymnastics in the first grade classes. He is rude and, despite repeated sermons by the principal, doesn't seem to be improving. Under the pretence of acting strict, he treats and talks with prejudice when teaching the students. Although he's acting on his own educational philosophy based on forcing others to stay in line, it perpetuates a vicious circle which nobody accepts.
Mikio appears in Yoshiki Kishinuma's flashback on how he met Ayumi Shinozaki. There he scolds Yoshiki for smoking in the bathroom stalls and continues to lecture him, insulting his parents in the process. Ayumi notices the two and tells Mikio that the vice principal is looking for him. Before leaving, he compliments Ayumi for having great, focused eyes, saying that instructors love her kind the best. After he leaves, even Ayumi calls him "the worst."
Significant plot details end here.
Mikio is the second tallest character in the series at 185 cm (6'0"), second only to Yuuya Kizami.