Dreambreaker : The extra from 2393 - Chapter 14: Double Dungeon[1]

William and his college class are ripped from Earth and thrown into Aethel, a world on the brink of collapse. Everyone gains incredible magical powers – except William. Mocked and underestimated, he’s an outcast among heroes. But William has a secret: an SSS-ranked skill that lets him travel to Aethel’s past. Learning lost magic from ancient masters, he’ll surpass his classmates and become the true savior Aethel needs. But can he overcome the dangers of the past and present to forge his own destiny? While others studied about the first mage, William could go back in time and see the first mage himself! While others dreamed of seeing a dragon, William could go back in time, hatch a legendary dragon egg and turn it into his puppy. While others used common materials to craft their items, William could go back in time and mine materials that weren’t find anywhere in Aethel anymore. Is it unfair? Perhaps, but William was not the type of person to not use the powers the universe gave him.

After successfully graduating with a master's degree and passing the civil service exam, Chen Ying returns to his hometown's Forestry Bureau to become a wildlife rescuer.He thought his daily work would just involve saving animals and petting all sorts of furry creatures, but ever since he saved a leopard and her two cubs, his life has become incredibly busy.No one told him that the leopard's best friend was a giant panda!And that giant panda was pregnant with twins and couldn't eat bamboo because of inflamed gums.Chen Ying had to call a dentist in the middle of the night to help the pregnant panda with dental fillings and cleaning, also providing a prenatal examination.After that day, word spread among the animals in the mountains that a bipedal vet had arrived who could solve all kinds of ailments!Hold on, being single isn't a sickness and can't be cured!What's that, you wish to arrange a meeting with domesticated animals to fix your single status? Well, that might be worth considering.Unbeknownst to Chen Ying, the animal community throughout the country came to know that the bipedal vet from the Apmu Township rescue station could help solve the problem of being single.Seriously, can't we keep this on the down-low? He's a vet, not a matchmaker!

This novel is also known as From The Start, I Traded A Galactic Warship

After getting a trading platform three thousand years later, everything in the world has become an antique, worth a thousand gold.

But it was also learned that three years later, aliens invaded, human beings fell, and the dark starry era began.

In this era of unprecedented change in tens of thousands of years.

Shen Shi decided.

First trade a space battleship, and then talk about it.

then–

Battleships come to the world from outer space! Global shock! Starry Sky Era, open in advance!

- Description from novelbuddy

Yi Zaha. The crazy demon crazy for martial arts. While he was running away after stealing the heavenly pearl of the Demon Cult Leader, he fell off a cliff. After thinking that everything was over, he opened his eyes to see that he had returned back to when he was a waiter… And he is being beat up for something that he didn’t do. The crazy demon who returned to the beginning of his days as a waiter! Will he go crazy again, or will he drive his enemies crazy?