1. This Nobody Will Become a Hero

Kaito is a frail boy who hunts slimes on the uppermost level of the city's dungeon. One day, he finds and defeats a glowing slime that leaves behind a very special card, changing Kaito's life forever.

3. The Viscount-Class Devil and Sylphy's Concerns

Kaito has found a new servant card, and this time it's a demoness. Her bold and demanding nature surprises him and seems to meet resistance from Sylphy.

4. Hidden Dungeon

Kaito's now seeing diminishing returns on the experience he's getting from the monsters on floor 3, so he makes the decision to brave the floors beyond... totally unsuspecting of what he's about to find there.

5. Attempting the 7th Floor! And a Date?!

Kaito decides to take part in a dungeon event to get to know some other explorers, but he's going to have a hard time explaining that to his usual party! Meanwhile, on the surface, Haruka works up the nerve to ask Kaito... out shopping?

6. The Doubly Dangerous 8th Floor

Kaito tries to convince his servants to let him form a different group. His new partners have big goals as well, and he needs to prepare for them.

7. Open Campus of Adolescence

Kaito takes Haruka to an open campus event at Ouka Academy, where they meet up with Airi and the rest of her party. Can Kaito manage to take a hint about how Haruka's feelings on the dungeon, much less anything else?

8. Bellia the Knight-Class Devil

Kaito and the girls take on floor 9 for the first time, where they're in for one nasty surprise after another.

9. Joyful Days

Kaito and his friends join Airi at her family estate for a study session that takes a fun turn. Afterward, Kaito's party takes another stab at floor 9 and tests out the various new powers they've acquired to great success.

10. What I Can Do Now?

Kaito and his friends learn the truth about Hikari's condition.

11. Searching for the Elixir

Kaito pushes himself beyond his physical limits in order to find the elixir.

12. And Their Heroic Tale Begins

Kaito confesses to Haruka that he is afraid of going back into the dungeon. Haruka encourages him, and suddenly, Kaito gets an idea!