Gothic Delusion
http://imgur.com/4Dvp2OX
Title: Gothic Delusion
Original title: ゴスデリ -GOTHIC DELUSION-
Developer: Lose
Publisher: Lose
Release Date: 2010-07-23
Getchu: http://www.getchu.com/soft.phtml?id=679906
VNDB: http://vndb.org/v3939

Description:
One moonlit night, new teacher Takamichi has a trick played on him on his way home by a girl Lo who says she is not a human and had been looking for him. It seems that she was being chased by someone. He thought that her claims were totally absurd, but not wanting to leave her alone in the middle of the night, decided to take her to the nearest koban.

Screenshot + H-scene
http://imgur.com/o1kGv5z
http://imgur.com/g3Z49ap
http://imgur.com/kevDAQM
http://imgur.com/AX4xihG