Synopsis
Based on the erotic game by Marine. On March 22, Saturday's summer holiday Shun was told to go back to his Nee-chan home to do something. Perhaps Shun thought he would be made into a toy By Nee-chan. And by the time Shun comes home, Nee-chan tells Shun because they get an unknown disease that's Idiopathic Estrus Syndrome, that causes his sister to feel the heat in his body that is out of control and the only way to cure the disease. They have to Regular intake of male sperm. And the romance relationship between Nee-chan and Shun begins ... (Source: Nekopoi and Has Been Translated and Edited)
Characters & Voice Actors
Asaka Segawa
MAIN
Ryouko Tanaka
JP
Haruka Fujimino
MAIN
Yukari Minegishi
JP
Tsukino Segawa
MAIN
Maki Kobayashi
JP
Yuki Segawa
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Natsuru Tsuzuki
JP
Shunsuke Segawa
MAIN
