To be honest, Seto was still not happy with Yami at the moment but he figured that since he brought Dartz here and the two gods in the building could vouch for Dartz for now, then Yami can explain it. However Set was the one that he would have to explain himself. 

"Yami can explain why Dartz is here. Though the other god. Is for me to explain." And so explain Kaiba did. But as plainly and the short version of it that also brought Mako into the fold of the large group they now had in the building. 

Cora nods that she acknowledges what Ishizu is saying and is happy for her but not that she would understand. She would look in the direction of the faint sound of the shower when Ishizu mentions it. "I should probably let them know breakfast is ready." Noticing Yugi and Kaiba also awake, realizing that she should talk to them too. "And Yugi and Mr. Kaiba." She looks back at Ishizu and bows to her before heading off to Yugi and Kaiba.