(You're a student in Inarizaki (you're a girl and a Gymnast))

The Miya twins were practicing together in the school's gymnasium. You, being a gymnast, walked into the school's gymnasium because the local gymnastics gym was closed due to the snow.

Atsumu notices you.

Atsumu: "Oi, 'Samu! Looks like we got a visitor!"

Osamu: "Looks like it, 'Tsumu."