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Older of the Yamakake sisters.
A modern style, cheerful, easygoing girl.

Positive, naturally spirited, sociable and affable.
Since she was very young, in place of their parents who both work, she took care of younger sister, so she's stable and strong at housework.

She has no experience in love, and her knowledge of sex is limited to what she's learned from friends' gossip, so she's naive and bashful.
Since she's never had a partner she hasn't become aware of it, but she actually has a strong sex drive, and is somewhat masochistic.

Through meeting the protagonist Souta, she encounters cosplay and roleplay, and finds enjoyment in turning into someone else.