My Sister is My Cat is a Japanese-style otome dating sim.

You play as the heroine, balancing academics and social life over four years of campus life. Raise your charm, fashion, and temperament stats — and meet three romanceable male leads: a gentle-yet-possessive top idol, a shy-and-sweet upperclassman, and a smooth-talking narcissist with a heart of gold.

Through classes, part-time jobs, dates, and seasonal festivals, you'll deepen your bonds and unlock multiple endings. Every choice you make will decide who stays by your side in the end.