While in the Neo World Program, the Ultimate Imposter acts as Byakuya Togami, as they have lost their school memories.

In the very beginning, Byakuya was not very sociable with the others, making his introduction short and simple. He also refused to join in on the short-lived beach party. (Maybe because he didn't wanna wear a swimsuit due to being uncomfortable with his vitiligo blotches)

After Monokuma took over the island and ordered the Killing School Trip, Byakuya immediately began to take action, making himself the leader of the group and promising the safety of all the students.

the next day, everyone would wake up, did their daily routines, and left their cottages and went to the hotel, where teruteru made food for everyone as they began eating. Byakuya couldn't help but scratch his arm. (Yeah Byakuya is easily distracted and have a extremely short attention span, like when when he talks he sees something and loses focus and completely forgets what he was saying)

mahiru: "so... now what?"