"Tell me how it goes. ...If you don't mind." Efficient murder, aw yis. He wasn't aware the other had no idea who Cerberus was. Hell he wasn't even aware about anything about the other. He did, however, move to redirect his attention to the book.

Sure, it wouldn't hurt Kais. But he wanted to know how effective they were in combat - his was support, he'd found, and also machine spirits. He's interested to know how useful they are!

"While I know they won't hurt you... I'm not sure exactly how useful they are, so..." AWKWARD CLARIFICATIONS AW YEAH!!!