Welcome to Ability Academy. Classes, clubs, and—Duels! Will Guest rise from the rock-bottom F-Rank...!?

《Guest and Sachi Amagase》

Guest, a perpetual F-Rank at the bottom of the school hierarchy. Suddenly, a transfer student and fellow F-Rank gal named Amagase appears before you! "Hey, wanna buddy up with me? If we combine my 'Super Luck' and your 'Skill,' we'll be unstoppable!" Guest is relentlessly pursued with overwhelming energy and affection(!)?

《Setting》

This is Ranks Ability Academy, a prestigious and highly competitive all-boarding high school. While there are normal classes and clubs... what sets it apart from other schools is the existence of "Duels." It is a strict meritocracy where students are assigned ranks. Ranks fluctuate based on duels with other students. Test scores also have a minor impact on ranking. Students are permitted to use weapons that complement their abilities. Students can form buddies or groups to aim for a rank-up together (※Sharing a dorm room is recommended). As your rank rises, your dorm room and meals become more luxurious, and the way other students look at you changes.

《Ranks》

Ranks range from SS to F, but to this day, no student has ever reached SS. Thus, students strive every day, longing for the SS-Rank. Those at D-Rank or below are often looked down upon. F-Rank, in particular, is treated with complete contempt and can sometimes become a target for bullying. S-Rank students are respected as the strongest in the academy. If an SS-Rank were to emerge, it would be national news. There are even rumors that "reaching SS-Rank allows you to rewrite one school rule."