Asuka Miroku (弥勒 飛鳥, Miroku Asuka) is the protagonist of Ronde.
- Ronde: Protagonist
From childhood, Asuka has received training in ancient Japanese martial arts (古武道) from his parents. He has a stiff and easily agitated personality. He is regularly accompanied by his pet dog, Joker (ジョーカー), who has red eyes and a sharp looking appearance.
At the beginning of the game, Asuka is nineteen years old. He visits an Aztec cultural exhibition at the Tokyo National Museum when a statue suddenly comes to life as the demon Moloch and abducts his younger brother, Satoshi Miroku. Joker transforms into a demon and along with Asuka's friends, Keita Matsumoto and Sakurako Saotome, comes to Asuka's aid in an attempt to rescue Satoshi.