Japanese name: 孤独に効く百合
Chinese name: 孤独少女的百合物语
Russian name: Одинокая лилия
From Visual Novel Database:
Developer: Night-time Sheep/ 夜のひつじ (Yoru no Hitsuji)
Released in June 2011. English version released in November 2012.
Character sprites and a selection of CGs at Yoru no Hitsuji's website.
Game contains 13 CGs altogether.
Initial gameplay video with author narration and commentary on YouTube by Gotan4140
Gotan4140's Lonely Yuri video playlist:
Full review of game:
Steam store page:
DLSite game page: