Mana seemed like a real handful. It's annoying me so much we didn't get to see how Shiki handles such a lively kid. Both Mikiya and Azaka are pretty forceful and headstrong personalities, so I guess it's easy to see where that part of Mana is coming from, but how she seemed so super joyous and optimistic is another thing. I guess she never went unloved or without due attention, despite having Shiki as a mother.