Demon Sword Sect's Undercover - Chapter 4 - 3: Thunderbolt from a Clear Sky

During the Second World War, Kyle looked at Captain America standing straight and proud before him. Suddenly, a series of skill cards appeared.「Pistol Master」「Martial Arts Master」「Shield Defense Master」「Super Soldier Serum」Which skill card do you wish to extract?“Wait… what? This golden finger… you must be pulling my leg! Not only skill cards but I can also extract super-powered skills like the Super Soldier Serum? Mother of God… what is this?!”(Hey Guys, I am retranslating this novel here and I will try to quickly reach the chapters that had been already translated on other websites. For everyone's confirmation, I am translating it with my own efforts and I am not copying it from other websites. So give me your reviews and tell me if you like it)

Outside the planet, there is a dead and boundless darkness.

Unknown planets are connected, woven into shelters of life, and countless cosmic races explore, develop, multiply, and fight against the empty darkness.

The little nameless clan can gain power for hundreds of years, and the powerful clan of billions of years can disappear in an instant.

Cultivation and inheritance, Tianjiao contends for glory, and heroes rise.

The human race started strong and went to the end.

No. 5 Broken Star, 732 Island Town, Wang Yu started his cultivation.

A few years later, the human race has bloomed in every corner of the world.

Countless human race arrogance looked up at the only human race god emperor.

“God Emperor Wang Yu, how can I cultivate to follow in your footsteps?”

The god emperor looked back and was slightly surprised. “Cultivation is not just repetition over and over again. It will become natural after you have fully practiced. All of you are more talented and savvy than me. I believe I don’t need to say more about it.”

The arrogance of the human race looked at the figure of the god emperor floating away, and remained silent.

“Proficient, what is that…”

- Description from novelbuddy

500 years ago, Chen Xi was devoured by a crack in the void and was transported into a cultivation world.

500 years later, he returned back to Earth after enduring through several hardships and discovered that only 5 years had gone by.

…

In the courtyard, beauty at the side, a candle flame wavering.

A gush of clear wind, half a full moon, the peach tree remains unchanging.

…

Wait, whose kid is this?! Why is she calling me papa? Gazing at the little girl in front of him with skin as pale as jade, Chen Xi froze.

…

　
Returning home from cultivation, starting as a stay-at-home dad.

In this life, not fighting to be a king nor claiming to be a tyrant, only praying to peacefully be a wife-pampering mad devil and a child-protecting daddy!

- Description from Novelupdates

Intellectual Villages are old fashioned rural villages recreated with cutting edge technology. Those villages attract the Japanese monsters known as Youkai.

The high school boy Jinnai Shinobu lives in one of those villages and has a Zashiki Warashi living in his house. He tends to run across Youkai with unnerving frequency and this often leads to trouble for him.