[Castellan Zilla]

Keep in mind, it could be Haruka who puts Mamoru down. Or it could be Jin. If it's Jin, which honestly I rather see, it would create more conflict between Alpha and Omega. Keeping with Haruka's wishing to be human as possible, he could very well rather find some way to help Mamoru instead of just ending his life. Whereas Jin...would have no qualms about it.

I do find it interesting that Jin seems to have this protectiveness over Haruka. It could be as simple as he feels sorry for the other, it could be something more. Who knows.

With such small amount of episodes planned, it's difficult to say where they can take all these loose ends and possible scenarios. I could see Haruka and Mamoru battling it out just because it would be the easiest in terms of story telling within a short series.