"Sorry I… just can't really do that" said Kat. Kamiko was nodding along with the suggestion before Kat spoke up, and so she paused, looking at Kat out of the corner of eye.
"Do you mind if I ask why lass?" asked Not Gramps
"Well… I didn't really want to bring it up, but the person who raised me goes by Gramps. I've known him my whole life and while apparently it wasn't quite since I was a baby, I can't remember a time where I wasn't under his care. So no offence to you of course but… it would be like anyone else trying to call you like… 'Dad' or 'Father' or something. It's just… really weird for me" said Kat