Description from original post (created 2018-12-29 03:02):
"Kamakurako" from Yume Nikki.
The girl slept in an igloo within a world of snow. ("Kamakura" is used for "igloo" in Japanese)
And there's no way to wake her up.
About this Character (Yume Nikki wiki)
I struggled with her clothing since there's so limited I can tell from the sprite. In several illustrations she wears trousers but I still gave her a pair of skirt, since she should have a similar outfit compared to Madotsuki.
(Well actually it's not necessary to struggle with these... Due to loose character settings she can be portrayed as a boy.)
I added a "Z" to her back, making reference to her behaviour in the game, that is, sleep.
If there is a next, it will be Madotsuki.