Kurashina Sensei's Passion(2004)

Shiritsu Shouei Gakuen Danshi Koutoubu: Kurashina-sensei no Junan

Shoei Academy is a prestigious private school system for young boys from well-to-do families. Newly appointed teacher Mr. Reiji Kurashina soon finds himself to be the center of attention at Shoei Academy – the center of attention for young men who are just about to ripe, that is! What does cool and collected Kurashina-sensei do when he becomes the object of love!

(Source: DMP)