I choose a C ranked hero in another world, I was mocked online - Chapter 41: This Punch, Two Months of Power

Her first encounter with Qin Sijue is an unexpected one. While trying to hide from her pursuers, she accidentally barges into his changing room. Yet, their paths crosses again fatefully—after a fake marriage, she legally becomes his bride. She imagines that they will only interact before the agreement ends, after which they would have nothing to do with each other. However, Qin Sijue comes over with two red booklets—their wedding certificate. “Take them for an appraisal and see if they’re real”.

A college student, accidentally reborn into the world of Naruto, becomes a member of Uchiha who is destined to be exterminated.

In this cruel ninja world, in the face of endless wars and exclusion from the village, what will Uchiha Qing do?

PS: Later in the book, the protagonist will develop a system of immortal cultivation. Cultivating Immortals in the Ninja World, have you seen it?

- Description from novelbuddy

★DARK ROMANCE★^WARNING 18+^~NO RAPE~In a world dominated by organized crime and ruthless power struggles, a tangled web of trauma, revenge, and forbidden passion unfolds.Katya Volkov, the stunning but vulnerable daughter of the Russian Mafia's feared right-hand man, has endured a childhood of unrelenting brutality and neglect.Growing up, Katya was repeatedly tormented by her father's resentment, leaving her emotionally shattered and unloved.However, Katya's life was about to take a much darker turn. Romeo Salvatore, a name that was both feared and respected, emerged from the shadows.His traumatic past has left an indelible mark on his soul, rendering him cold and detached.Seeking retribution, Romeo launches a daring invasion of the Volkov's heavily guarded estate. He captures both Katya and her abusive father, subjecting them to merciless torture.Convinced of Katya's complicity in her father's heinous crimes, Romeo executes her father and condemns Katya to a life of hellish slavery.Yet, as time passes, the boundaries between captor and captive begin to blur. Katya and Romeo find themselves inexorably drawn into a forbidden bond, igniting a fiery passion that threatens to consume them both.Torn between his thirst for revenge and his burgeoning desire for Katya, Romeo is forced to confront the darkness within himself, would he be consumed by lust, passion and possibly love or would he stay loyal with his beliefs.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~This story is an enemies to lover type so don't expect all fluff and rainbows.~Weak to strong female~ML is ruthless, don't expect him to be a saint.~No rape~humours, laugher, tears and blush.~ And lastly, this story is not for the weak hearted~

The fiancée has betrayed, but how could she know that the man she looked down upon was in fact a prodigy with healing and martial prowess!