[@hatakekuro]
I would prefer if he didn't XD
The more people who come in, the more likely Manami might just think it's too much of a hassle and leave. She might want to eradicate slayers, however she isn't stupid enough to try and fight against multiple wizards and slayers unless she knows she can win.
However I also wouldn't mind if he came in because I think him fighting Manami would be amusing.
What would win? Holy Water? Or God Slaying Ash?
Cause if memory serves water beats ash (or at least makes it heavier), however is her magic weak to god slayer magic?
Then again Nidhogg and Shiro should be able to take the four gathered (maybe....good thing they're not the only Shadow Heart mages XD)