As a fat, sickly, and spoiled child, Takefumi was constantly picked on in elementary school. He was somewhat protected by the tomboyish Tsubaki, who, while protecting him from other bullies, would bully Takefumi herself. He transferred to a school in another city, but returns years later to attend Hokuei High School with the other characters. When he returns to Tokyo, he had lost weight, become healthy, tall, handsome, and completely unrecognizable. Although he butts heads with Yukino at first, she recognizes that his efforts to transform himself are similar to her own obsession with her image, and they share a mutual, albeit begrudging, admiration.
When it comes to Soichiro, Takefumi acts like Hideaki, i.e. completely smitten with the teen. While in elementary school, besides Tsubaki, Soichiro was the other one who constantly defend Takefumi. However, unlike Tsubaki, Soichiro doesn't bully him in return. This earned the respect of Takefumi. (In fact, his makeover was partly because of his goal to be like Soichiro)