Kantan na Monitor desu - Reaper Game 03: Reversal

In an era when the power of Fire Magic was considered to have reached its limit, one girl began researching nuclear fusion.

Liana, a humble omega raised in silence, awakens on her 18th birthday with the scent of her fated mate — the son of the Alpha. But the bond isn't simple. The Alpha has triplet sons, and all three begin to feel the pull toward her. Thrust into the center of political tension and pack rivalry, Liana must confront betrayal, ancient magic, and a forgotten prophecy.As she finds herself entangled with Kael, the stoic firstborn, Jace, the charming troublemaker, and Rowan, the cursed empath, Liana discovers she is more than she was told. Her wolf is the reincarnation of a Luna lost to betrayal. Her bloodline is royal, hidden in shadow. And her destiny is not to choose a mate but to unite a broken world.With Celeste, the Beta's daughter, unraveling in jealousy and Darius, a rogue Alpha with vengeance in his heart, threatening war, Liana must rise. Not as an omega. Not as a mate. But as the Luna fated to reshape the future.

Because her appearance was not breathtaking, the Emperor breaks off their engagement and bestows her instead to the bloodthirsty, ruthless, and cold-blooded Second Prince (Wang Ye).

On her wedding night comes endless humiliation, the genuine Princess Consort becoming a deserted women. A foolish woman before rebirth, she no longer expects his love. In this world, she must possess enough talent to awe those around her, carrying herself with composure and articulating with beautiful diction, override above the nine night.

- Description from Novelupdates

In the eyes of outsiders, Hyuga Yuuto is a genius in the traditional sense of the Hyuga family:

Tough, strong, gentle, and calm, he is a partner worth relying on at all times.

However, no one knows, in countless silent nights.

The young genius of the separation family stroked the caged bird engraved on his head and fell asleep with the sharp needle in his mouth, fearing that in his sleep he would reveal the madness and anger deep in his heart——

“What Uchiha Itachi can do, I, Hinata Yuuto, can’t dare to do?”

- Description from novelbuddy