Just like an anime protagonist! A heartwarming story of a light novel author and his sexy tsundere little sister! The protagonist, who cannot write a new light novel no matter what, makes an erotic request using his own sister! Unstoppable dirty words flow, and unexpectedly, his sister also becomes sexually excited, leading to sex! Multiple internal ejaculations with the tsundere sister! The OP video, starring for the first time, is a must-see! Besides the erotic scenes, there are numerous off-shots that fans will love! A divine work filled with the irresistible charm of Aya-chan, guaranteed to make you fall in love!