Riten Mansei

Visual Novel Version
A female mechanic in the sequel, Shin Koihime Musō. She and her comerade Ukin like to goof around during peacetime, much to the chargin of Gakushin. She is also quite voluptous given her short stature.

Cameo in Shin Koihime Musou OVA as a videogame character.

(Source: Wikipedia)