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.