User blog comment:IamJakuhoRaikoben/Chapter 457: Naked Battle, Review./@comment-24277053-20151019185547/@comment-7418318-20151019192329

I'm not really a fan of that theory, but I can see how it might work.

With Marin's mastery of Spatial Magic, he might be able to occasionally channel energy from the Celestial Spirit Realm into her and thus keep her from dying like Loke would have... that might explain why Brandish keeps Marin around despite being disgusted by him.