Au

Au is Ink's senior and a member of the Photography club at South Tech University. He may be a student in the Faculty of Communication Arts.

He is mentioned in Episode 8 and was initially supposed to meet with Ink and Pa for dinner over hotpot at Shuusabu. He called Ink after she and Pa had already had started preparing the hotpot, telling her that he had something urgent had come up so he could not join them.