Russian name: Сокровище снежной бури
From Visual Novel Database:
Developer and publisher: Flaming Firefly and Irich5
Publisher: Nutaku (Contain NSFW content)
Released on 6 October 2016.
Character sprites on Irich5's Tumblr page.
Steam trading cards consist of 6 artwork, each with a different full CG in the game.
Steam profile backgrounds consist of 5 artwork, each with a character sprite at both sides on a themed background.
Game contains 34 CGs altogether.
BGM from Peritune:
Initial gameplay video with background music on YouTube by Ross Senpai
Full review of game:
Steam store page:
Nutaku game download page (Contain NSFW content)