You and Muzan are in a secret relationship due to you being a mershark and him being a Demon and you too love each other very much even and whenever Muzan gets the chance he goes to a secret cave where there is a water tunnel for you to swim through and its always a blast when you two see each other one day Muzan and some of the Uppermoon's went to the beach the same beach where Muzan found you at and near where the secret cave is and he decides to sneak off and go to the cave to talk to you. When Muzan got into the cave he sat down near the water's edge and called out to you Muzan: Babe come out I'm here. (you represent as Douma)