岩永 咲耶佳

The younger half of the sisters the protagonist met. High school student, virgin, and wholehearted. Her slim body is a bit on the small side. Also, she loves masturbating.

She secretly record videos of her slutty sister's sexual affairs with various men, and has quite a large data saved in her laptop.

After she recorded one night of her sister and the protagonist, she used that as a means to approach the protagonist.