A Shut-In's Cross-Dimensional Path to Immortality

"What? This world doesn't even have the term 'two-dimensional'?!"

"Then why did I transmigrate here and get reborn?"

"Obviously, I'm here to create the 'two-dimensional' world..."

Congratulations, you've successfully activated these heroes:

Dragon Slayer Mage: Natsu Dragneel

The Black Swordsman: Kirito

King of Sin: Shu Ouma

Railgun: Mikoto Misaka.

Cross-dimensional superpowers: who can stand against me on the path to immortality? Hey, you! Come cultivate immortality with me!!!