[DeepL Translation - needs review] Volume 1 Introduction: Kirino, the younger sister of Kyosuke "me" Kosaka, is a perfect girl with good looks, excellent grades, and models for a magazine outside of school, but in fact she is an Akiba-type who likes "sister" erotic games! Kyosuke has been in a cold war with his sister for years, but when he accidentally discovers her secret, he is asked for "life advice"...?
(Translator: DeepL)
