Strongest Survival by Otome Game’s Heroine (LN) - Chapter Volume 3 18: Target

It is a parallel world that is full of Star Power. Star Maps, Star Techniques, Star Pets, and the Awakened are rampant. Jiang Xiao, whose soul travelled to this world, has a special internal Star Map within his body and goes on to become a Medical Awakened.

However, he did not know that he was not raising just a harmless pet, but a biological weapon secretly made by the government… a real monster.

As a former librarian, Rand felt that he had been living an ordinary life, the one that he had reclaimed unconsciously every single day.

Recently, he has been a little upset because the pet fish he accidently brought home to raised seems to have undergo some strange changes

Well, it turned into a merman.

- Description from Novelupdates

In a parallel world, everyone awakened to weapon talents. They used divine weapons to battle against ferocious creatures.

Hence, the Forgemaster job class was born and was held in high esteem.

Wu Mo transmigrated to this world and became a student of the top academy, Divine Arms Academy.

The end-of-semester practical exam was in three days. Students were required to forge a divine weapon on the spot.

However, he was not prepared at all!

Fortunately, he awakened a system which allowed him to see the blueprints of all mythical weapons.

[Mjolnir]

[Divine Bow of the Winter God]

[Eternal Spear]

[Shield of Zeus]

…

Since he was a blacksmith, he decided to create a hammer for himself first.

On the day of the end-of-semester exam, the whole world was astonished!

An examiner exclaimed, “We asked you to submit your assignment and you are submitting Mjolnir?”

A spin-off of Lillia and Treize, Meg and Seron is a high school adventure/mystery/romance/comedy of sorts taking place in the rough equivalent of the 1950s. The story follows Seron, a stoic and handsome bookworm who is in love with his classmate–a sweet, oblivious transfer student named Meg.

Meg and Seron takes place at around the same time as Lillia and Treize, but knowledge of the main series is not necessary to read Meg and Seron.