1. Kiri's yukkuri: miserable cuteness. 2. big.g's yukkuri: innocent and naughty cuteness. 3. Takumi's yukkuri: mixed. ... I somehow feel sorry for the pair in "Maricha's new year", can adopt the wild Marisa in "yu penetration bar", spray poison to kill big.g's yukkuri (since this is the most peaceful death for them), but strangely, yuntayunko's yukkuri makes me want to torture them in the most painful ways, really don't have any sympathy at all: yuntay's yus are cute with teary eyes, but I feel that their cuteness is a surface of rotten core.
Ehh, the "y" is a part of "yu" which is a part of "yun", so you should say "yunta" or "yuntayun" when you want to shorten their name (but if you choose the latter, it's best to write down all their name).
Also, I don't think big.g's yus are innocent, naive maybe a more suitable word, but really, I don't think those words fit them, but yeah, they're cute enough to make you want to crush it.