Boin (ボイン?) is a Japanese eroge visual novel developed by Crossnet-Pie, a subsidiary brand of Crossnet, which is known for visual novels such as Maple Colors, Ayakashi, and Kanojo x Kanojo x Kanojo. 'Boin' (ぼいん'?) is Japanese slang for 'big breasts'. It is followed by its sequel Resort Boin. A DVD player game version and a UMD was also released.
Daisuke Ichijō (一条大介 Ichijō Daisuke?) is a new teacher in school. He became popular with everyone in a matter of days. He conducts a class that allows his students to role-play as whatever they wish to be when they graduate, but some say this is a plot to spend extra time with the girls, and the girls expect more than just lessons.
A sequel titled Resort Boin was released on March 16, 2007.
- Official page for the Boin visual novel at the Wayback Machine (archived March 3, 2006) (Japanese)
- Official page for the Resort Boin visual novel (Japanese)
- Boin (OVA) at Anime News Network's Encyclopedia
- Template:Vndb - Resort Boin
- Boin (OVA) at Anime News Network's Encyclopedia - Resort Boin