The bassist of an aspiring rock band and manwhore, Reita Suzuki needed a place in Tokyo. After a few search in the internet, he finally found a place. It says that "BlackDragon" the unit's owner; was looking for a roommate. The price of the room was just enough for his budget, and the unit was in a sophisticated building in the heart of Shibuya too. It was a perfect place... until he met BlackDragon.