KURENAI MITSUBA

Description from Aestheticism:Post-Apocalypse society, a genetically engineered 'jinzou ningen' and an immortal off on a quest to the west.

Sui is a brand new student at a boarding school. His dorm master is a sexy, studly college student called Daira, aka "King". Sui develops a crush on Daira which slowly deepens into mad love, only to be reciprocated by harsh words and a cold shoulder.