Cause of My Teacher

Cause of My Teacher (先生の事情, Sensei no Jijō) is a manga anthology written and illustrated by Temari Matsumoto. The manga is licensed in English by Blu Manga, the Yaoi Tokyopop, and was released in September 2009.

Plot
A student who is fond of eyeglasses tells his tender teacher of his feeling. The teacher kisses him but he is a little unsatisfied because the teacher takes the eyeglasses off when they kiss One of the stories featuring Hiiragi and Asagi is continued in another work by Temari Matsumoto called Shinobu Kokoro: Hidden Heart.