is a Japanese manga written and illustrated by Yugi Yamada. It was seralised in Hanaoto magazine and collected into a bound volume by Houbunsha in 2002. It is licensed in North America by Digital Manga Publishing, which released the manga through its June imprint, on 24 February 2010.

Dry heat sterilization of an article is one of the earliest forms of sterilization practiced. Dry heat, as the name indicates, utilizes hot air that is either free from water vapor, or has very little of it, and where this moisture plays a minimal or no role in the process of sterilization.