Netherborne [An OP Monster Isekai] - Chapter 14. Arcwing

After breaking up with his girlfriend, he accidentally acquired a genius system and rose from there against the heavens, becoming invincible..

- Description from Novelupdates

When other people experience a body transformation, it is inevitably either male to female or female to male.

Me? I wake up to find myself transformed into two different bodies.

Both a male body and a female body, one conscience operating two bodies, all sorts of embarrassing moments.

Walking together normally makes other people think that I am sweethearts with my other-self, such sadness.

Also, the entire business of a hero rescuing the beautiful maiden, I call Bull.

I get slashed by a sword and my female body gets abducted, and he wants me to thank him?!?! Can it be less of a tragedy?

- Description from Novelupdates

“In the depths of eternity, where darkness and light entwined, the universe was born from the dreams of the gods. From the celestial harmonies of creation to the discordant melodies of destruction, the cosmic symphony echoed across the expanse.Within this grand tapestry, a world emerged, forged from the essence of duality. Earth, a terrestrial haven, became the stage for an epic drama, as forces of creation and destruction converged. The fate of the universe hung in the balance, as two goddesses, Stella and Khaos, wove a narrative of light and darkness, life and death.Their story, a testament to the eternal dance between opposites, would give rise to a new era, one where humanity would inherit the earth, and the delicate balance of the cosmos. Join us on a journey through the ages, as we explore the celestial ballet, the birth of life, and the eternal struggle between creation and destruction.”

She was a famous assassin who had killed important figures, but ironically, she was killed by her own lover.And when she thought she was dead, it turned out she was occupying the soul of a young girl who was tricked by her own family.'Because I have been reborn, I will take revenge on the people who planned my murder and also teach a lesson to the people who underestimated the girl whose soul I reside in!'However, things become complicated when she has to marry a cold man, whom she spent the night with.