Arai Sayaka

 is a former member of Happy Dance, Bijin Mochiya (美人餅屋) and Niji no Conquistador. She left the latter group before being promoted to a full member.

She was on the Choreographer Team of Niji no Conquistador.

Profile

 * Charm point: Dimples
 * Hobbies: Visiting sushi restaurants
 * Special skills: Talking with anyone
 * Future ambition: Actress

Trivia

 * Older sister of Arai Yurika (pax puella)