MTL - My Girlfriend has a System - Chapter 214 Literature everyone?

Three Days of Happiness is a novel by Sugaru Miaki, also known as Fafoo. It’s a rewritten version of the story originally posted to 2ch.

The premise of the story revolves around a shop where one can sell away the remaining years of their life, and the consequences of doing so.

“I Say A Little Prayer” is a short related story which was posted along with the novel’s release. It spoils some things about the main story, but nothing major.

A teenager who unexpectedly gets transported to the modern world from ‘the world of the immortals’ . He finds himself in the body of an ordinary guy. He wants to go back to his world and for that, he will have to practice to get stronger and investigate the reason why and how he crossed through to this world.

- Description from Novelupdates

In the previous life, she was a swindling charlatan who had neither learning nor skills and was beaten to death.

Upon opening her eyes again, she had returned to when she was five years old. An impact from a clay Buddha opened her divine eyes, gave her photographic memory, astonishing talent, ability to view another’s past, able to sever the ties of disaster and fortune of life and death, a heaven defying rejuvenation technique, and a technique to recognize treasures.

In the last life, her family became ruined and she ended up a homeless wanderer.

In this life, she will defy heaven to change her fate and take back her happiness.

In the last life, she had nothing, had no education nor skills, was despised by others, and was looked at with indifference.

In this life, she exerts herself to become a real master of metaphysics, stands in the summit of the world, became a legend in the business world, sought after in the political circle, and a VIP of the underworld……

Those who owe her, all will be given one’s due!

He, like a deity who shows disdain for the world not only treats her with familiarity but also guards her like a loyal dog.

Her life became an unprecedented and unique existence.

- Description from Novelupdates

Until he became the lowest-ranked master, his lonely and luckless life never changed.

Suddenly one day, a descendant injected him with a nanomachine, and the machine started ‘speaking’ to him.

“What? What are you talking about?”

This was beyond the boy’s knowledge, he turned pale.

The Nanomachine linked to his cerebrum realized the User was not understanding a single word it said.

“Who are you, and why are you doing this to me?”

“Nano Mashin?”

The boy’s face hardened.

Mashin was the deity the Mashin Religion worshipped, along with the Sacred Fire.

The religions’ Master communicated with Mashin.

“Um, are you really Mashin?”

The boy knelt down and asked with a trembling voice. At this, the Nanomachine attached to his cerebrum realized it had been misunderstood.