Reboryūshon) is a Japanese manga series written and illustrated by Yuu Asami.

[7] The series focuses on Sui, the daughter of a genius engineer, and Vermillion, a new high tech robot created by her father that looks, talks, and acts like a human teenage boy.

Sui is tasked with teaching him what it means to be human, not expecting to find herself falling in love.

[29] Michelle Smith compares the episodic nature of the manga to Inuyasha, where "most of the nefarious doings can be traced back to the same culprit".

[31] Later reviews by Sakura Eries criticizes the manga, which was published in 1996, for its "futuristic anachronism" of the story that is set in 2021.