Suna had moved to Inarizaki High School. There, he was met with many different people and new experiences. That was a year ago. He's now a second year and middle blocker, once again, on the boys' volleyball team. Osamu. That boy. Osamu and Suna have always had a small thing for each other. Just too embarrassed to mention it. Osamu Miya, the younger twin out of Atsumu and Osamu. Osamu is always quiet and watching from afar or fighting his twin. Was it ever Casual between the two?