An ordinary high school classroom filled with students diligently taking notes At the back of the room, a boy named Brock sits with his head buried in a fantasy novel. His unkempt hair and glasses give him a nerdy appearance.

Brock: (whispering to himself) This is so cliché. The hero, the chosen one, the savior of the world... It's always the same.

As Brock continues reading, a mysterious, shimmering portal opens right in front of him. Startled, he drops his book, and the entire classroom falls silent.

Teacher: (curious) Brock, is something wrong?

Brock cautiously approaches the portal, his heart pounding. Before he can react, a strange creature wearing a top hat and monocle emerges from the portal.

Creature: (eloquently) Ah, greetings, young one. I am Sir Percival, a being from the world of Eldoria. We are in dire need of your unique talents.

Brock: (bewildered) What? Eldoria? Talents? What are you talking about?

Sir Percival: (confidently) You see, young Brock, our world is plagued by the forces of darkness, and we require an eminence to guide us. You, with your extensive knowledge of fantasy worlds, are the perfect candidate.

Brock: (sarcastically) So, you want me to be your chosen one? To save your world from evil?

Sir Percival: (nodding) Precisely. You will become the Dark Overlord, the master of shadows, and lead our quest to restore balance to Eldoria.

Brock hesitates for a moment, glancing around at his disbelieving classmates.

Brock: (with a smirk) Well, if it's an adventure you want, you've come to the right guy.

With a determined expression, Brock steps into the portal, leaving behind the mundane world of high school for the unknown realm of Eldoria.

[Brock finds himself in a vibrant, fantastical world. Lush forests, towering castles, and mythical creatures surround him. Sir Percival stands beside him, beaming with pride.]

Brock: (amazed) This place... It's like something out of a video game or a novel!

Sir Percival: (grinning) Indeed, it is. Welcome to Eldoria, Brock. Your journey as the Dark Overlord begins here.

Brock: (excited) Alright, but where do we start?

Sir Percival: (thoughtful) First, you must gather loyal followers who will swear allegiance to you. We will seek out those who are willing to embrace the path of darkness.

As Brock and Sir Percival embark on their adventure, they encounter various characters, each with their own unique abilities and quirks, who join Brock's growing group of loyal followers.

Brock: (with determination) I may not have been the chosen one in my world, but in Eldoria, I'll become the Dark Overlord and lead us to victory!

With newfound confidence and a diverse group of allies, Brock's journey in Eldoria unfolds, filled with magic, monsters, and unexpected twists.

End of Chapter 1

To be continued...

[Author's Note: "Dark Overlord" follows Brock's transformation from a high school student to the chosen Dark Overlord of Eldoria. Join him on this epic adventure as he confronts the forces of darkness and discovers the true power of his unique talents.