Title: Youkoso♪ Seerua Gakuen Nakadashi Festival
Original title: ようこそ♪ セールア学園中出しフェスティバル
Length: Short (2 - 10 hours)
Year: Japan 2009-12-25, English Android 2016-12-08
Developer: Anime-seal & Softhouse-Seal
Publishers: HBOX.JP
Language: English
Voice: Japanese

Description:
Yosuke is the captain of the student council. One day, he receives a letter from someone unknown, "I've recently got a girlfriend. But I can't have sex with her because I'm such a shy boy..." He thinks about holding a festival for him. If they take part in a festival, they will get excited and have sex without being shy... "Great idea! I'll soon prepare for it..." Like this, his erotic festival starts...

Important:
1. No need to install version.

2. Not tested without system locale other than Japanese, but you'll probably need to change it to Japanese, cos this is a ported translation from the Android version.

Screenshots: