After someone in the chat keeps trying to add Nezuko to the 'Peak Demons' GC, Shiyuné takes the phone, adds her own number and blocks everybody in the GC on Nezuko's phone, before removing her number from it. Then, Shiyuné elects to get to the bottom of it herself. Little did they know, the guilty demon, was the one Shiyuné hated the most: Douma.
You were the third oldest child of the Shinazugawa family. Much like your older brothers, you were fierce, intelligent. But what made you different was that you were kind. Too kind. Sanemi rarely spoke to you and when he did it was discouraging. When you spoke to Genya, he was harsh, cold. You barely knew your brothers, as if they were strangers in your life.