Title: Flatcheez
Original title: ふらっちーず
Length: Short (2 - 10 hours)
Year: Japan 2011-02-05, English Version 2019-12-16
Developer: Anda Daichii
Publisher: Anda Daichii
Language: English
Voice: Not voiced

Description:
Yuuta is a young boy who has moved to a new town after a family crisis. After experiencing his first wet dream, he becomes curious about sex. This comedic Flash ADV takes place over the course of a week at his new school as he tries to make friends. As he is tempted by characters like an ecchi school nurse and his sister, you can choose whether to play him as a good kid, or a pervert and peeping tom. Angel and devil characters representing his conscience appear in his mind at every decision to try and persuade him to their side.

Source: DLsite

Important:

1. No need to install.

Screenshots: