Dungeon Maker - Chapter 15

When she woke up, Lake returned to the classroom of the third year. The classmates were in class with swords and sticks, and the teacher became a female Taoist.
The little fat man in the back seat, how to put two big hammers under his chair.
Rick found this to be a global era!

- Description from Uukanshu (translated)

Once upon a time, everything was awesome on planet Earth.People were chilling with their families, tech was super advanced, and they could even travel way out into space. Animals taking care of the food chain like they always do.But then, bam! Something crazy happened, and everyone got zapped to this super-dangerous place along with some weird alien folks of many types.Follow Lucas, a regular dude, as he tries not to get wrecked in this crazy new world.Some folks got cool skills to survive, but all Lucas got was the power to build a fancy shelter that could level up. Sounds lame, right? But turns out, it might be his ticket to not getting squashed.So, get ready for Lucas's wild ride as he figures out how to survive in a place that's basically a nightmare. While others are doing ninja moves or casting spells, Lucas is just trying not to get eaten. Little does he know, his so-called bad luck might just be the thing that saves his sorry butt.Join Lucas in this epic adventure full of surprises, where he builds his shelter, faces crazy challenges, and learns that sometimes, what seems like the worst luck ever can turn out to be a total game-changer.It's a story of survival, discovery, and how even the simplest guy can rock a world that's turned upside down.

This novel is also known as A Stay-at-home Dad's Restaurant In An Alternate World

There is a very strange restaurant in the City of Sin.

Elves and dwarves must share a table, orcs are strangely well behaved, dragons are only welcomed on the small square in front of the restaurant, and the demons must bring their own stool.

This strange restaurant with their strange rules continuous to attract a long line of customers.

“This place serves the best food! The chef of this restaurant is a genius!” Some of the guests in the restaurant left glowing reviews. But these guests have a word of warning for other guests, “No matter what you do, never, never attempt to kidnap the boss or try to ‘eat and run’. You will die.”

A cute little girl stood near the door, and demanded in her tiny voice, “You have eaten the food, now pay up, or I will beat you to death.” The five-meter tall dragon suddenly felt a chill running up its spine.

- Description from novelupdates

Cha Myung-jun, a sergeant who neared the end of his military service, found himself confined in the Ministry of National Defense’s bas**ent for over three decades due to his newly awakened abilities, just before the outbreak of war. Spending thirty years as the world’s most formidable blacksmith, wielding nothing but hammers, he skillfully outwits the watchful eyes of the Ministry of Defense to serve the war effort and reset the course of time. Now given a second chance at life, can he lead a successful campaign to avert humanity’s downfall and secure its salvation?