Prince Etienne de Frederick was born a dominant omega, but in a world where omegas can’t become the emperor, he must pretend to be a beta due to the empress’s greed. When his childhood friend, Grand Duke Rishar von Eckhart, returns after three years as a war hero, there’s no time to share a happy reunion as Rishar is a dominant alpha and his rival in the fight for the throne. The two continue to maintain a precarious relationship until, one day, Etienne has a sudden heat cycle, and Rishar finds out the truth. “Etienne de Frederick. You were... an omega?” (Source: Tappytoon)

Official Novel:
Volumes, Chapters: Main, Side Story

Official Webtoon:
R19: Ridibooks
R15: Ridibooks

Official Translations:
Spanish, T.Chinese
R15: English, French, German, Japanese
R19 (S2): English, French, German

Notes:
- The novel's main story is R15, while the side story is R19. And the novel's volumes include both main and side stories.
- The webtoon's rating changed to R19 for S2.
- The Spanish S2 version is uncensored.