Why Does It Have to Be the Villain’s Younger Brother?

[Fantasy, Western-style, Omegaverse, dimension travel/soul swap, salvation, dominant alpha top, handsome top, cold-blooded top, obsessive top, black-bellied/scheming top, dominant omega bottom, naive bottom, unrequited-love bottom, lively bottom, runaway bottom]

I possessed a fantasy novel, 『From Possession to Hero』.

And not as the protagonist, but as Seian, the younger half-brother of the final boss Reizen, the one who is supposed to die at his hands.

‘An extra who’s already dead in the main story...’

But Seian had far too much inherited wealth to despair.

So he gritted his teeth and decided to survive.

[Quest

1. Say “big brother” to Reizen more than three times 30/3

2. Stay with Reizen for more than 30 minutes 120/30

3. Hold hands with Reizen for more than 5 seconds 0/5

Reward: the body text of 『From Possession to Hero』 and 「Reizen side stories」]

Even with absurd quests, he somehow managed them.

Only to survive, he acted as harmless as possible, pretending to be the little brother who was utterly infatuated with Reizen.

But then…

“You have manifested. As a recessive omega.”

Suddenly, a setting that never existed in the original appears.

“You said it yourself. That the two of us were the only people in the world.”

The final boss even chases him all the way to the place where he barely managed to escape?

※ This work has been revised to be suitable for readers aged 15 and up.