Awakening a System in the Marvel Universe, I Forge an Invincible Path

I'm a fan of Marvel movies and anime. After dying, I transmigrate into the Marvel Universe and obtain a System that can only be described as "overpowered," though it comes with plenty of restrictions. At first, I'm overjoyed with this System, but I soon realize I'm in an extremely dangerous world where my life is constantly at risk. The protagonist isn't invincible from the start. He has to grow stronger over time!

This novel and its characters are entirely fictional. Any similarities are purely coincidental. Please do not imitate.