Daiki Ishikawa

Ishikawa Daiki (石川 大輝) is a classmate of Taichi, Iori and Yui's during their second year. He is the boyfriend of Nakayama Mariko.

Personality
In Step Time, Ishikawa is shown to be a rather bland conversationalist, though he tries his best to keep his date with Mariko interesting.

Relationship

 * Nakayama Mariko: Ishikawa's girlfriend. They started dating during the "love boom" in the fall of their second year.