Rikugun Renai Shikan Gakkou

From Fantasyshrine: The Instructor Demands ABSOLUTE obedience!! A forceful love between an army officer and his student!? During WWII in Japan, Yamato came to the Imperial Army Academy with the dream of becoming an officer! However, during his entrance exam, an elite instructor named Onizuka pushed him down—!! The super scandalous love between an egotistic instructor and a prideful top student on campus!!