Sekaiseifuku Doukoukai

Winner of the 10th Comic-Meteor Polaris Comet prize.

Description:
My harmless everyday life suddenly changed when those words were said—
The same clubroom, the same senpais. It's crazy to think that the world changed.
Kaname Furuta, who threw away that peaceful life, was spurred on by his senpais' words and began his "World Conquest" in order to protect the world!
To protect the world from his literary club senior, the daughter of a secret underground organization, and his aggressive childhood friend!?
A world conquest comedy starting in a time of adolescence.