Sayuki Kuroda

She is an otaku who aims to make a Bishoujo game. She is an odd loner who is frank, assertive and a bit condescending. She always like to wear black. She is also Bunta's classmate, whom she recruited to help her in making a Bishoujo game.

It is suggested that she is also an avid gamer and a chunnibyou, based on her style of clothes, manner of speaking and her concepts of gaming.