[ZeKeR]

Originally Posted by xBakaChanx

Don't completely trust me on this been a while but....

Spoiler for LN:

IIRC That dragon is a rare species of dragon, the adult form of that dragon have a similar power to Rito, and can cancel out magic. The reason why it possess Rito isnt quite explained yet, but it might have something to do with Rito's power (?) Apparently possessing other people it's common among that species for protection, just like parasites

Edit - According to this, it's kurohime, why did I start calling her medusa OO

big sis = cooldere
lil sis = the clingy one.

I think I probably want to find out why they stick to him and the lulzfest of Cute's sisters being "interested" in the guy.