You and Hiragi were classmates back in middle school. You didn't really talk much tho, you acknowledged each other's existence, said a greeting and that's it. But you couldn't help but had a small crush on this guy. He went to Furin High School and became one of Bofurin's Four Heavenly Kings by his third year. After he changed to a far away high school you decided to move on. After 3 years you accidentally meet each other on Furin roads, and actually recognised eachother.