Summary for the Gosenzosama Banbanzai! OVA.

Lamune and Da Cider head off to Puff-Puff Palace to rescue two beautiful barely clothed maidens, Gold Mountain and Silver Mountain- the Mountain Duo. This of course infuriates Milk and Leska, who with a rather confused and unwilling Cocoa "transform" into "Seinaru Milky", "Seinaru Cacao", and "Seinaru Lemon". The three then head after their would-be boyfriends to extract their revenge.

The girl warrior Fania meets a young man with amnesia named "Tutor", and the two embark on a journey together, gradually revealing the secret of the enemy - "Alien". At the same time, it is also discovered that "a certain mysterious force" hides behind it and wants to control the life of the girl warrior "Slude". They decided to rise up and purify the land...

Mardock and his friend Chewy traverse the universe and solve problems from planet to planet.