The Daring Thief

The protagonist transmigrates into an old manga and takes the role of Mori, a villainous phantom thief and holy young man who is classmates with the original boy-detective protagonist, with whom he has a love-hate relationship.

The protagonist stares at the words "holy young man" with a look of pure agony: ...

How is a frail, bespectacled shorty who takes five minutes to run 800 meters supposed to become an agile, masked phantom thief?!

System: Congratulations, you've been bound to the Heroic Spirit System! As long as you build up your heroic spirit, you can exchange it for temporary height, temporary agility, temporary good looks, and even temporary anti-science performances! Become the most outrageously cool phantom thief in the world!

Protagonist: (earnestly) So how am I supposed to save up enough for my initial investment?

During a math exam, the protagonist, who had stayed up studying for seven days, sat beside the original protagonist, his classmate. Looking at the test paper, he fought back his pained expression and gave an evil smile.

"A citywide exam like this is nothing!"

"A little city key school thinks it can hold back a Buddha like me?"

Original protagonist: ?

System: Heroic spirit +99! You won a new item: a phantom thief's top hat that releases pigeons!

A new character suddenly shot to the top of the manga world's popularity charts: a mysterious phantom thief dressed all in black.

The thief stole a jewel from the queen's crown and swapped out a priceless painting the richest man had stolen by force. The international police laid a sprawling trap to catch him. When they lifted his cloak, all they saw was fireworks filling the sky.

While readers frantically shipped the holy young man with the manga's protagonist, the holy young man, halfway through fleeing the trap and out of heroic spirit, was on the verge of despair, clinging to the top of the Eiffel Tower with tears in his eyes. Surrounded by planes, he asked the System, "What else can I trade for?!"

System: "A violin that can amplify its sound across the world."

Holding back the hot tears his own bravado had brought on, the protagonist stood atop the Eiffel Tower, surrounded on all sides, and played The Song of the Wandering. When the piece ended, he finally earned temporary teleportation and escaped with his life.

The next day's headline read: Surrounded on all sides, the holy young man stays calm and plays the violin atop the Eiffel Tower. As everyone is entranced, he vanishes into the night. The manga world's detective protagonist read the paper and murmured, "He was surrounded by a crowd and still played the violin for the police on top of the Eiffel Tower? Now that's some nerve!"

Theme: An overwhelming amount of bravado!