Age of Discovery: I, the Demon Twins, Lie Flat from the Start

In the world of the Grand Line, the weak crawl on the ground and beg for mercy, while only the strong can control their own fate.

My name is Allen. I transmigrated into the world of the Grand Line as an ordinary person, but luckily I bound myself to an anime sign-in System. Signing in every day makes me stronger.

I have an older sister named Nico Robin, a user of the Flower-Flower Fruit. For some reason, ever since we started wandering, she has trained like mad, day and night.

While my sister trains like crazy, I stay by her side, bringing her tea and water. I eat, drink, and get stronger by signing in every day.

My name is Nico Robin. I was the supreme empress who brought the Grand Line era to an end. I transmigrated back a hundred years and swore to change every regret.

But somehow, I ended up with a younger brother who's lazy and loves to eat. All he does is eat, drink, and sleep. Still, he is quite considerate whenever I train, which takes the edge off my frustration at his lack of ambition.

Looking at the wanted poster in my hands, marked "Demon Twins," and facing a hell-level start from the start, there's nothing for it. I'll just have to work hard myself.

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.