I'm bombarding the Supernatural World with my firearms - Chapter 101 - 100: "Shadow Controller".

“Everyone deserves a happy ending, don’t they?”…In the brutal fantasy RPG Fall of Ares, saving the world came at a cruel price — the deaths of every heroine the player had grown to love. No matter how skilled you were, their sacrifices were inevitable. The game warned you not to get attached.But one young man did.After beating the game and lamenting their tragic fates, he wakes up in its world — reborn as an extra, armed with one mission from a mysterious system:[Change their endings. Let them live.]Now enrolled at Mysteria Academy alongside the heroines doomed to die, he must rewrite fate itself. For every girl he saves, he’s rewarded. But the world resists change. Calamities draw closer. The true enemy — the Children of the Sky — are watching.And one of the heroines… remembers it all.

The world I reincarnated into was a world that enabled you to use magic after having read a Grimoire.

And the Grimoire’s contents areーー you wouldn’t believe it- it’s 「Manga」.

This world’s people would take around a year to read a single Grimoire (Manga)

While for me, it would not take an hour, as it was「Manga」

Interpreting and understanding all kinds of Grimoires, the 6 year old me who became the World’s Strongest Master Mage, welcomed brides that were also 6 years old, and started living a carefree life……!!

Tong Yao never expected that getting a milk tea could result in getting struck by lightning on a sunny day, and then waking up in the 1980s. She became a mischievous, spoilt wife of a top-tier doctor from the future. Rather than leading an ordinary life, she was caught eloping and stealing money, and reacted with crying, making a fuss, and hitting walls.Under the hopeless circumstances, she discovered she could understand animal language. While other time-travelers were busy making money to support their families, she was just enjoying the show.“The deputy director's wife accepted five jins of pork from a patient's family. The old couple is squabbling behind closed doors right now.”“The Dean has had a flare-up of hemorrhoids these past few days and can't sit on a chair.”“Mr. Li's wife is a tough woman. That missing tooth on the left was knocked out by her.”“Tong Yao has improper conduct. She used to secretly meet people in the village.”Tong Yao didn't expect the day would come when she would be the talk of the town....One day, Tong Yao heard a stray cat at the door muttering, “Dr. Si is having a date with a nurse in the corridor.”Furious, Tong Yao went to catch them in the act, only to find the doctor was discussing a patient's condition with a nurse who was over fifty. Wanting to run away, Tong Yao found her escape route cut off by the doctor, who backed her against a wall, “So I heard you came to catch us, huh?”Tong Yao never expected the saying, 'Those who always walk by the river eventually get their shoes wet,' to come true.

At the beginning of the 21st century, twelve reincarnations shattered the void and returned to their hometown.

They preach the world and reopen the space of reincarnation.

Then……

“The Republic of East Asia announced that it will fully implement a five-year spell casting and twelve-year simulation mage training policy.”

“The Republic of East Asia has announced a new change in the marriage law, making it legal to marry someone you call upon after meeting the adulthood conditions of your respective race.”

“The Republic of East Asia announced that the East China Military Region No. 1 Mobile Armor Brigade was established, and the special humanoid mecha “Gundam” officially joined the campaign.”

“Congratulations from the United Kingdom on this, the upper hero Arturia Pendragon will visit Shanghai next month”

“In the far east of Japan, the ignition of the wave engine failed, or seek energy assistance from the East Asian Republic.”

“Space cracks have been discovered in the Chernobyl region, alien creatures have ravaged the Chernobyl region, and the Russian Defense Forces have entered the battle.”

Four years after twelve reincarnators changed the world, Li Ping entered his own battlefield for the first time.

PS: Although the introduction is like this… but in fact it is written about two thorns + machine battle + movie + mythical stew…

- Description from novelbuddy