Band leader and lead vocalist of "VadLip".
He has an aura about him and is capable of anything, but his insincere personality, rough behavior, and intimidating presence often lead to him being isolated and kept at a distance.
After a certain incident, he became very attached to Sunao, who protected him without prejudice.
The reason he started acappella was because he wanted to do club activities with Sunao. Although he doesn't say it out loud, for Hisaomi now, acappella is an important activity.