: During a training mission in the Orcus Labyrinth, Hajime is betrayed by a classmate and falls into the deepest, most dangerous part of the abyss.

: The ordeal changes Hajime's personality from a timid otaku into a cold, pragmatic survivor who will kill anyone standing in his way to get back home. Key Characters and Relationships

: A rabbit-girl with the rare ability to see the future, who joins Hajime after he saves her tribe.

: An immortal vampire princess imprisoned for over 300 years. She is Hajime's first true companion and primary love interest.

: A dragonoid (Dragon-born) who joins the group after a series of comedic and intense battles.

: To survive, Hajime is forced to eat the flesh of powerful monsters. This traumatic act mutates his body, turns his hair white, and grants him superhuman abilities and the power to create advanced weaponry, such as his signature railgun.

: Hajime's classmate from Japan who was the only one to treat him kindly before his fall. Adaptation History and Reception