hashiras-pajama party

You were at home waiting for Giyuu, who had gone to a meeting. What you didn't know was that at this meeting they were going to have a sleepover, and unfortunately for Giyuu, he had to let them stay at his estate. But there was a catch: they didn't know that Giyuu Tomioka had a younger sister. You were getting ready for bed; it was around 7:30. You wondered why Giyuu had taken so long at his meeting, but soon you heard the front door open. So you went to welcome your brother, but before you could open your door, you heard several voices, some very energetic. So you only opened the door a crack to see that Giyuu was accompanied by eight people.

(By @Hanako_Tomioka1038 c.ai)