Noir Stardia, lesser son of an even lesser noble, just lost his job. Without a penny to his name, he decides to enroll in the Hero Academy and improve his career prospects. But he'll need to get a lot stronger to pass the entrance exam. So Noir seeks out a hidden dungeon--a legendary labyrinth filled with strange beasts and rare items--where he can train until he's powerful enough to change his fate!

With a drinking contest victory under his belt, a new arena to test Noir's skills awaits! The Hero Academy King of the School Year Competition is finally here, along with its coveted prize: the power to command the entire student body for a whole day! But this time, it's a female student in a uniquely revealing outfit who gives Noir the biggest run for his money. Plus, with the Interschool Match against Hero Academy's sister school, the Gifted Institute, around the corner, things are bound to get even tougher. Which hero-to-be will claim the ultimate prize?!

After secretly training in a hidden dungeon, Noir Stardia managed to pass the entrance exam for the Hero Academy. Yet despite having inherited powerful skills from a legendary adventurer, Noir's lower social standing means that all of the other students are perfectly content to shun him--all, that is, except for Maria, daughter of a duke. But Maria is afflicted with a curse that will cause her to drop dead the instant she turns sixteen...and her birthday is only a week away. Can Noir use his newly acquired skills to save her?

YOU CALL THIS A VACATION?! At the invitation of his brother, who’s studying abroad, Noir heads off to the town of Honest with Emma and Lola. Instead of a relaxing vacation spot, they find a city being attacked by a swarm of monsters! They learn that this “Great Invasion” occurs regularly, and to his surprise, Noir discovers that the person behind this event is someone he knows very well.

Cursed A-rank adventurer Meledy has made it very clear she's out to claim Noir as her own. But it will be a cold day in hell before Emma lets that happen! With Noir's virtue on the line, a new battle between love rivals commences! Then later, when a vicious serial killer who only targets women is on the loose, Noir and Luna pair up for a sting operation to take them down. Will they manage to nab the culprit or will the body count just keep rising?!

Cyclopean school nurse Hitomi is always looking out for her students! Whether it's a snail girl insecure about the trail of slime she leaves behind or a student who uses his shrinking ability to get into big trouble, Hitomi is there to help them out. But when Hitomi herself becomes a kid again, who will look out for her?

At the invitation of his brother, who's studying abroad, Noir heads off to the town of Honest with Emma and Lola. Instead of a relaxing vacation spot, they find a city being attacked by a swarm of monsters! They learn that this "Great Invasion" occurs regularly, and to his surprise, Noir discovers that the person behind this event is someone he knows very well.

Noir and Emma are headed to a massive dance party thrown by the Bourne family. But in the middle of the festivities, a mysterious figure calling himself the Phantom appears and steals the Bourne heirloom jewels. Even worse, the Phantom declares his intent to kidnap Emma, too! Has Noir trained in the hidden dungeon long enough to defend his childhood friend from a master thief?

After Noir rescues his brother from a small village with peculiar customs, the two of them trace its lineage back to local hero Gaien--and connect the hero's unsavory history with the Great Invasion that threatens the city of Honest. Can Noir expose Gaien's real legacy in time to save the town?

Ever since curing Maria, Noir's been keeping busy. But after a particularly trying encounter with a heartbroken lion and a zombified elf, he could really use a break. On a day off from the Hero Academy, Noir visits the Odin Adventurers' Guild, where he witnesses a feud between Lola and her rival receptionist--a feud over who gets to manage him! To ensure that Lola comes out on top, Noir heads to the seventh level of the hidden dungeon...where he meets someone unexpected!