From Reader to Ruler: The Forgotten Prince's Rise through Harem - Chapter 10: Leena in Heat

Gabriel, a dominant omega, is caught up in a complex web of intrigue and danger at the royal court. After uncovering the truth about Olivier, a member of the royal family, and inciting a rebellion, he is marked by an unknown alpha. As the rebellion overthrows the old order, a new empire emerges, driven by a ruthless ruler whose rise Gabriel inadvertently enabled.Haunted by the weight of his actions, he flees from his family, his past, and the dangerous ties of the court. On the run, Gabriel must deal with shifting alliances, hidden enemies, and the growing power of the mysterious alpha whose mark he carries. As the empire's grip tightens and ghosts from his past resurface, he must decide whether to confront the forces threatening to engulf him—or risk losing himself completely in a world that regards him as either a pawn or a weapon.

The 7-year-old little crybaby met 11-year-old big brother who ran away from home.
[This man became the protector of redemption in his life]

The 16-year-old little dragon fell in love with a 20-year-old big brother.
[It’s a pity that the big brother didn’t recognize him as the little crybaby]

The 23-year-old single father and 27-year-old chief executive meets again.
[This time the little crybaby and his big brother are finally together]

Fortunately we met through hundreds of millions of people, Thank God, for letting us break through many obstacles and get back together again, falling in love with you and being with you again is the greatest fortune in my life.

- Description from Novelupdates

What the hell? That menace who bullied me since I was six years old, actually became a pretty girl after three years of living apart? And she even ran to our agreed duel location to confess to me, hoping that I can become her boyfriend?!