High school student, summoned to another world. Non-combat job class “Synergist”. Having fallen into the abyss of the Great Orcus Labyrinth, Hajime swears to slay all that stand against him.

A girl who was sealed within the Great Orcus Labyrinth, but was later saved by Hajime. A vampire who has lived for a very long time and wields rare magic powers. Member of Hajime’s party.

A member of the Rabbitmen clan's Haulia Tribe. She wields a peculiar ability called “Future Sight”.

The strongest Black Dragon of the Dragonman clan. The proud descendant of Klarus. Her job class is "Guardian".

Hajime’s classmate, very popular. She has been interested in Hajime ever since a certain incident in the past. After Hajime fell into the abyss, Kaori worked to reunite with him. Her job class is "Priest".

Kaori’s best friend. Extremely skilled with the sword. She cares a lot for Kaori and is often forced to deal with the mess caused by Koki. Her job class is "Swordsman".

A girl who from the sea. She was separated from her mother when kidnapped, but was saved by Hajime later. Subsequently, she addresses Hajime as "Papa".