Anime Crossover: Physical Immunity from the Start!

An immunity System from the start?

Why are all the abilities defensive? Am I supposed to follow the fear-of-pain defense route?

No. There are no useless abilities, only useless developers.

Since immunity isn't about making things disappear out of nowhere, but about gaining traits that let you resist them without harm, then...

Reverse-engineer immunity to intelligence reduction and gain extraordinary comprehension.

Reverse-engineer mental immunity and gain psychic superpowers.

Reverse-engineer water-element immunity and gain an affinity for water.

Lin Yi: Anyone who can't break through my ultimate technique has no chance of defeating me. Weaklings belong rotting in the trash heap.

Demon King Muzan: Everyone else uses one kind of Breathing, so why can you use every element? Your ordinary fire-and-lightning attacks even inflict burn damage? I can't beat you, and I can't run away either. I should have died a thousand years ago.

Dragon God Orsted: A Sword of Light as a basic attack, god-tier magic with no incantation. Immune to physical attacks! Immune to magic attacks! Immune to mental illusions! Immune to viruses! Bro, please, just act like a person!

No toxicity, no angst, and an invincible growth story.

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.