Forum:Melty Blood: Does Nanaya Shiki cares about Hisui?

Hi. I was reading one of the quotes by Nanaya Shiki when he defeats Hisui in Melty Blood Actress Again. It says:

"Just because it's not pitch black at night anymore doesn't mean human eyes have become better. Stop walking around at night. You should stay locked up in that mansion for your own safety."

I was actually surprised that he cares about Hisui safety, but ignores if Kohaku or Akiha is alive or not. Is because Hisui was the "nicest" to him before he got brainwashed by Makihisa, or after that?

And Kouma actually said that he "tried to be human", not only that, but Nanaya even said that he had some "lingering affections", is this somehow linked to that?

I can't really think that this is actually true Nanaya Shiki (The one that died after SHIKI got insane) but just a massive form of fear for Tohno Shiki that used his Nanaya as a reference.