倉賀野 詩桜

A senior at the school, one year above Shougo. She's also the most popular girl among the students of her class.

Unlike her other 3 sisters, she is a free-spirited girl with an easygoing temperament. However, she is a genius, her grades are really high.

She´s willing to have sex with her brother and she's not ashamed to admit it publicly, a complete brocon just like her other sisters. In order to get his brother to take control of himself, she seduces him every time showing him her breasts.

After deciding to breastfeed Shougo, she was very happy because she will finally make her most secret fantasies come true

"Do you like my breasts...? Ahhhhh♪ It feels good to breastfeed you Shougo♪"