Birthday: July 19

Horoscope: Cancer

Blood Type: A

Age: 27

Kouki is an employee who belongs to the sales department of Sunlight Beverage, along with Mikoto and Tatsuru. He is a doubles player in the badminton club and his partner is Touya. Kouki has high communication skills, and although his words and actions are always cheerful and easily becomes elated, he actually gets nervous easily and performs badly when things count.