I'm a Muggle in a World of Magic

After transmigrating to a world where even random passersby can use magic, Arthur is in a panic: he’s a Muggle who can’t learn a single spell. He always thought of himself as cautious and careful, but then he unexpectedly awakens a mysterious power that makes him quick to anger. The angrier he gets, the stronger he becomes, turning into a reckless close-combat bruiser who smashes through anything in his way. Hypnosis? Immune! Eat this punch! Wind Blade? Reflected! Take this palm strike! Fireball? Try my Martial Soul Fusion Technique: Ace’s Fire Fist! Watch this world’s version of the Hulk smash his way through the entire field.