In the era known as Bakumatsu, there was an ishin assassin known as Hitokiri Battousai; eleven years later he returned as a wandering swordsman, Himura Kenshin.

Yuhi and Yasumi, who are both voice actresses that attend the same high school. They host a radio program together. They are diametrically opposed in appearance and personality, and they get into fights when they are not on air.