|Hobby||his own maintenance|
|Likes||high grade oil|
|Japanese voice||Daiki Nakamura|
|English voice||Matthew Mercer|
Ryushin is Sherman's Fairy partner and a robot type fairy.
Ryushin is covered with white metallic armor with blue linings that resembles a robot, just like his pattern of speech.
Ryushin has a serious and straight-laced personality. Additionally, he is somewhat thickheaded and unable to adapt to the situation. As a mech-based fairy, he speaks in a robot-like speech pattern, i.e. " [Negative. Enemy strength inadequate to warrant assembly. Probability of victory at your current power level is 100%.]"