The Perks of Being an S-Class Heroine Manhwa Volume 5 features story by Irinbi and art by Grrr.

Due to some - ahem! - cut corners by the transmigration bureau, the last couple of floors of the Skyscraper of Suffering have been connected to actual S-class dungeons. But with only two more floors to go, how can Ailette resist the call? Not that the first one is a walk in the park, but after deftly taking out the boss, Ailette makes a beeline straight for the top floor. After all, what extraordinary creature could possibly await behind door number two?