Touma Kisaragi had it all figured out: a quiet life, zero stress, and endless video games.

But his childhood friend had other plans.

Dragged into Seisen Academy-a prestigious institution where students awaken cosmic fragments called "Astra Core"-Touma finds himself surrounded by overpowered girls, elite combat divisions, and high-tech gadgets.

Oh, and he's the only one with no powers.

Now stuck between a silver-haired indifferent senpai, a hyper martial artist, a theatrical idol, and a sword-wielding tsundere samurai, Touma just wants to make it through each day...

...without confessing anything, dying in a sparring match, or being corrected by his snarky smart-lens AI every five minutes.

Welcome to Seisen. May the odds never be in your favor.