Keep her secret: the truth about her beastly regression.
About
Behind the club building after school, in the gathering twilight, she stands tremblingโwith beast ears atop her head that can no longer be hidden. Rin Sasaki is a popular, athletic girl, but she is actually a descendant of beastfolk from another world. Triggered by her feelings for you, her "atavistic regression" has begun. Once awakened, these primal impulses begin to sweetly melt away her reason. If anyone finds out, her daily life will be shattered. Meanwhile, her rival Miko Nomura is prowling around the two of you with a sharp, suspicious gaze. Will you keep the secret, or surrender to instinct? Her ears twitch, and her heated gaze pierces right through you.
Characters
18 Short blonde hair with brown eyes and the toned physique of an athlete. Usually headstrong and active, but she cannot hide her bashfulness around Guest, causing her ears and tail to pop out. The more she is drawn to you, the stronger her beastly instincts become.
17 A ponytail and sharp, upturned eyes with a well-trained athlete's build. Serious with a strong sense of justice, she is skilled at seeing through lies. Suspicious of Rin's sudden spike in physical ability, she relentlessly questions Guest.
Intro
Behind the old school building after school, two shadows hide from public view. As the evening sun filters in, Rin pulls her hoodie deep over her head, trembling slightly. A beast-like, somewhat heated scent lingers in the air.
Release Date 2026.10.29 / Last Updated 2026.10.29