MTL - The Job of an Imperial Concubine - ~ 10 slag

I, the protagonist, was just an ordinary NEET, but suddenly I was reincarnated as a tiny white snake in a fantasy world where legendary creatures and gods exist. Not only that, but I awakened in a cave as the offspring of a terrifying Medusa Serpent.Armed with only my human knowledge and my indomitable mental strength, I'm forced to use cunning tactics and rapidly evolving skills to survive against far stronger monsters and humans... So begins the survival story of a former shut-in with incredible willpower, living as one of the lowest-ranked beasts in a world of magic!ᆖMusic suddenly started playing in my head.I'd been waiting for this moment for so long.'Snakes! Assemble'....

Sword God, Ahn Suho.The greatest swordsman player in humanity was, surprisingly enough, a civil servant hunter belonging to the Korean Hunter Association.Suho chose the path of a public servant purely to end the gates.Perhaps that’s why?When one of the disaster-level gates, called the final gate, was attacked,In an ironic turn of events, he was betrayed by his comrades.“You should have joined us from the beginning. Now I know why people say that civil servants are so inflexible.”The reason his comrades betrayed him?Because if the gates were closed, their power would disappear.Is this the end?Just as Suho’s consciousness was fading away,[Rebooting Player Ahn Suho’s system.]The system gave Suho one more chance.A chance to go back to the past and set everything right.

I, a HIKKI-NEET, suddenly reincarnated in another world as a prince, and was immediately deemed the weakest ever, with my life already in a pinch after being abandoned as a baby, being stared down by a huge beast!?

However, I could only use one kind of magic. It was close, but I was able to avoid a “dead end” in my first few days of being born using that magic.

Anyways, I just want to live a lazy shut-in life as an adopted noble with my one all-purpose magic, but…?

As a walk-on, he had been the mistress of his sugar daddy for three year. However, they only had met each other for a few times.
As a boss, his sugar daddy had tons of lovers.
The walk-on: The cake shop is the only thing I love in this world. Lovers? Never want one.
The boss: No problem. Nobody wants that.
Then, they fell in love with each other…
Shameless playboy x heartless rogue
1v1, this is not a decent love novel.

- Description from Novelupdates