I'm 90 years old and the system tells me it's time to create harem - Chapter 29: Universal Acupuncture[R18]

In his first life, he was the legendary hero who achieved the impossible, slaying the Demon King. But his reward wasn't glory, it was betrayal. Feared by the gods who ruled the world, they conspired to strike him down, murdering him without mercy.But Kai's soul managed to reincarnate in a modern and ordinary Japan. However, after a tragic accident on Earth, Kai returns to the world where he was once killed.Lyla, the tenth goddess and the only one who didn't betray him, never stopped watching him, she has waited for this moment for centuries. Her love is as vast as the universe... and just as dangerous. To protect her favorite, she has sacrificed her power to grant him a tool never seen before, The System.Now, Kai with no memory of his first life and Lyla must navigate a world fractured into nineteen kingdoms, dominated by the religions of the other nine corrupt gods who feast on the faith of the masses. With an obsessive goddess by his side and a power that grows constantly, Kai begins his grand revenge.

The young surgeon Zhao Heng awakened to a superpower. He is able to pick up various medical attributes in the hospital, and thus he steps onto the pinnacle of success.“Ding, you gained +1 experience in [Abdominal Trauma Emergency Surgery].”“Ding, you picked up [Paravertebral Block Puncture Technique (mastered)]...”

A bittersweet drama: As long as the heroine forgives her kindly and kindly, pays without regrets, and gives up again and again until the bad guys who bully her are old and unable to act, she will get a happy ending.

When Mercury is dressed as the heroine of each bitterness drama…forbearance? Pooh.

Terrible heroine, change her life online.

Content tags: Time travel, face slap, fast wear, cool text
Search keywords: protagonist: mercury ┃ supporting role: many ┃ others: fast wear, cool text

- Description from novelbuddy

Song Yu Xi is a tasker.

The system told her that she has a great and glorious task on her shoulders – to save the world!

Song Xu Yi is dedicated to her work, remembering the first rule of the Fast-Travel Code of “no love”, and is dedicated to reforming the world-ending villain and strengthening the power of the protagonist, but she never thought that every world would develop in an unpredictable direction:
The beautiful and charming villainous movie queen hugged Song Xu Yi’s neck and breathed like an orchid: “Kid, why do you always blush when you see me?”

The sickly and delicate villain Omega raised Song Xu Yi’s chin: “My dear Miss Song, how does it feel to have an Alpha become an Omega?”

The cold and beautiful villain student sneered and put the five million check into her school bag: “There is no other way to repay the favor of funding, only the promise of your body.”

The villainous prince disguised as a man slowly tore up the peace proposal: “If you want to negotiate peace, you can let your Grand Princess Song Xu Yi come and make peace…”
System （(艹皿艹 )）: Say no to love and don’t fall in love!!!

Song Xu Yi ((╥_╥)): Sorry!

I blame the villain for being too beautiful, I couldn’t see her tears…

The love story of a hardworking wage earner tasker and a gloomy world-destroying paranoid villain.

- Description from Novelupdates