Ken ga Kimi for S is an adventure game set in the early Edo period, where players navigate a captivating storyline filled with intrigue and supernatural elements. Players assume the role of Kayo, a young woman who embarks on a marriage promenade at the request of the Princess of Sunpu Castellan, due to their striking resemblance. Accompanied by six samurai bodyguards, Kayo's journey takes her through iconic locations such as Edo, Hakone, and Mishima, all while facing various challenges, including encounters with youkai and a mysterious ritual surrounding legendary swords.

The narrative unfolds with choices that lead to two distinct paths: one of war and the other of peace. Players must navigate these decisions while exploring the rich cultural backdrop of the Edo period. With its combination of historical settings, engaging characters, and a blend of adventure and supernatural themes, Ken ga Kimi for S offers a unique gaming experience that appeals to fans of narrative-driven games.