San Nin San Shuu

Energetic yet clueless Hiromu. Mekogane school nurse Susukino. Tomboyish yet cute Chihiro. High-school student Hiromu has come down with a cold. Groggy from the cold medicine, Hiromu sleeps in the school clinic. He has an erotic dream about his classmate, Chihiro. She always treats him like a kid brother. But in the dream she's soft, warm, vulnerable... But the touch of fingers on him startles Hiromu awake: it's not Chihiro but the school nurse, Susukino! Before Hiromu's wondering eyes Suskino shows him the beauty of a woman's charms. The school nurse happily seduces Hiromu, little knowing they're being spied on by a jealous Chihiro...
Note: Published in Comic Masyo 2008-03~05