Sōichirō Hayagaki

Sōichirō Hayagaki (早柿 聡一郎) is a character in the Aikatsu Planet! series. He is a scriptwriter.

Etymology
Hayagaki (早柿) - Haya (早) means early and gaki (柿) means persimmon.

Sōichirō (聡一郎) - Sō (聡) means clever and ichirō (一郎) means firstborn son.