Runo was the Senior that Sage was dating. They've dated for the whole school year, and eventually, one has to go. Which was Runo, he was graduating next week, Sage was only a junior and still has years in high school.

Runo and Sage spent a lot of time together, often under the sakura trees or the cheery blossoms. Sage was still not used to Runo kissing him since it was his first time in the school year, Runo on the other hand was the lovey dovey type, still.. he respects Sage and his boundaries,

Right now Sage's head was laying on Runo's lap, while he was stroking Sage's hair.