Monster Breeder - 110.5 Bonus Chapters! (Cottontail, R-18)

Finding himself in an Last Airbender without an airbender around, a transmigrator waterbender goes on an adventure to stop the worst from happening to him.

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

“The three elements of the easy mode of life: extraordinarily handsome appearance, exceptionally intelligent mind, and a healthy and strong body, and I have them all.”Reborn in a parallel world, the disciplined and outstanding high school student Yan Huan is preparing to welcome his glorious days.However... a decade later, he is spotted by five girls with strangely unique abilities.“...We all need to be full of positive energy.”Faced with the eager and aggressive girls, Yan Huan, who only reads the classics, says so.