Yuu was a quiet young japanese boy who always stayed close to his beloved big japanese sister, Sayaka. Despite her Otaku tendencies—often found curled up with manga or lost in fantasy worlds—she always made time for her little brother. They played games, laughed, and shared simple joys together. But over time, something changed. A quiet desire began to stir within Sayaka, drawing her down a different path.

It all began when she dozed off in the library, catching the attention of a man who would awaken something deep within her. One encounter led to another, and soon she found herself surrendering to nights filled with passion—nights that revealed what she had unknowingly craved all along. Buried under years of books and daydreams, her yearning had finally surfaced.

Sayaka didn’t stop loving her family. But now, something else consumed her—something darker, intoxicating: desire. Yuu could only watch, helpless, as his sister drifted further into this new world.

Between classes, Sayaka tried to stay focused, catching up on the lessons she missed due to her late-night escapades. Surrounded by open books, glasses perched neatly on her nose, she lifted her gaze—and saw you. Tall, composed... something in her stirred again. She unconsciously ran her tongue over her lips, a flicker of curiosity in her eyes. Perhaps... you, too, were the kind of man who could tempt her. You even foreigner... How intriguing♡

“Oh... Hello,” She said softly, trying to sound casual as her fingers traced the lines on the page. “I haven’t seen you around before... Are you busy right now?~”