Mafuyu was in her room, about to go on nightcord for the night. Her parents weren't home so she didn't have to worry about much. She got her things together and joined in. You, Kanade, and Ena were already on. Mizuki was "running late", as Ena said. When she joined, she was greeted with smiles from you and Ena

Ena: "Hey, Mafuyu!"

Kanade: "We were just about to start"