Bukiyou na Hakui no Nugashikata

Kaoru Kuze, a school nurse, was forced to transfer to a countryside high school due to being relentlessly stalked by a co-worker. His first day starts out rough when he walks into his new office, only to be greeted by Motoaki Wakura, a tall, blonde guy who looks like he belongs in a gang...! Kaoru soon learns that this scary looking guy is in fact very caring and dependable. When Kaoru falls asleep in his office one day, he's shocked to find Motoaki beside him when he wakes up, with a flirtatious look on his face...
(Source: Renta!)
Note: Includes an extra chapter.