Ryo Kajiki is our main protagonist's best friend, who doesn't know about his alchemical secrets, and when he does find out, he is brainwashed again and again to forget it, often leaving him confused. In his spare time, he is an avid comic reader, being an avid fanatic in his beloved supernatural comic, ranting about it with the utmost enthusiasm.

In an alternate universe, someone who happens to look exactly like Ryo goes by the name of "Butler". As you can guess, he is a butler to Houou Kaguya Quartz, constantly introducing him and announcing the most unnecessary things at any given moment, talking very grandly and once more, very enthusiasticly.