Rihito Sajo is a main character in the anime and manga series "Doukyusei" (Classmates). He is a high school student known for his serious demeanor and academic excellence. Despite his reserved nature, Rihito becomes friends with and eventually falls in love with Hikaru Kusakabe, a fellow student and musician. The series explores their developing relationship, highlighting the challenges and joys they face as they navigate their feelings and the expectations of those around them. Rihito's character is central to the narrative, embodying themes of love, growth, and self-discovery.