Think about it for a second.
Kei and Schlock would get on like a house on fire (and it would be).
Tagon would definitely appeal to Yuri’s taste in men, and is capable of keeping up with her when the accidental* mayhem starts.
This could work hilariously well. And if it doesn’t, or if the very idea terrifies you, there’s always the Brain Bleach.
*Obligatory disclaimer is obligatory: IT’S NOT THEIR FAULT. 🙂