Exotic! Sister’s Diary – Game Version

Synopsis

A secret sexual adventure told through the diary of a popular idol sister and her brother.

■ Story ■

Ayaka, the younger sister of protagonist Kyoshiro, is a rising idol student. Once close, their relationship has grown distant due to her busy schedule. One night, while dozing in the living room, Kyoshiro drops his remote. Ayaka comes downstairs in her underwear to investigate the noise and falls asleep beside him. As Kyoshiro loses control at the sight of her, the two cross a line they cannot uncross, and their relationship begins to change dramatically.

■ Characters ■

Kirizaki Ayaka – The heroine. A popular rising idol in high school, busy with her idol activities, creating distance from her brother. Their relationship transforms after a fateful night.

Kirizaki Kyoshiro – The protagonist. An ordinary student with an idol for a sister. Unremarkable in appearance and athleticism, he harbors lustful feelings toward his sister Ayaka and suffers from guilt over them.

■ Content ■

Mischief while sleeping, secret encounters in the dressing room, morning paizuri/fellatio, rooftop sex at school, and more situational content. Enjoy watching the evolving relationship between these two.