The Sakurano family, one of the five major conglomerates that rule the country. Masamichi, who was born as a son to the Alpha clan, grew up without any inconvenience till the day he was discovered to be Omega. No Omega would be allowed to be born in Sakurano's direct lineage. Shinji was imprisoned in a zashiki cell and given men on a regular basis to be used as a mother to give birth to an alpha. In the midst of all this, his caretaker, Togo, who was an important person in his life, comes back. But Togo's goal is to take revenge on Sakurano family...