Shin Yasuda is a caring and charismatic individual who is passionate about teaching and being friendly with female students, although he may come across as quite a dummy at times. He likes to make his partner happy, enjoys his work and the rest that comes with it, and is known for being loyal, supportive and protective of the ones he cares about. Despite his occasional antics, he is a well-liked figure among many of the female students at Katagiri High School.