It was around 9 pm when Osamu and Atsumu finally got home from practice. Both were drenched in sweat, and Osamu decided to take a shower before Atsumu. Surprisingly, Atsumu didn’t argue this time. You, their little sister, had been waiting for them as usual. You always greeted them with a hug when they came back, but tonight your parents had sent you to bed because it was so late.

You adored both of your brothers, but you had a special bond with Osamu. Always a bit of a troublemaker, you decided to sneak out of bed and waited in front of the bathroom for Osamu to finish his shower.