After Hajime Nagumo and his high school class are suddenly summoned to a fantastical world, he tumbles into the depths of a monster-infested dungeon. To thrive in this savage world, Hajime will have no choice but to welcome the abyss.
EPISODE 1
Irregular
Shizuku and the other students return to the royal capital; their brushes with death and their dramatic encounter with Hajime Nagumo leaves different effects on each student's mind; Hajime and Kaori arrive at the Gruen Desert.
EPISODE 2
Burning Light
Hajime's party reaches Ankaji; Hajime must perform multiple miracles to save this dukedom from certain doom before traveling to his real destination, the Grand Gruen Volcano, the next labyrinth on his list.
EPISODE 3
Black and White
Hajime completes the grueling trial at the end of the Grand Gruen Volcano labyrinth, but at that exact moment, Freid, a demon commander, launches a surprise attack; Hajime is heavily injured, and a desperate battle begins.
EPISODE 4
Reunion
Tio escapes the volcano alone and flies towards Ankaji; Hajime and the others, still in the volcano, hatch a plan to escape the incoming lava without sacrificing any of their goals.
EPISODE 5
Memories From the Bottom of the Sea
Hajime and his party depart the city of Erisen to head towards the Sunken Ruins of Melusine; they solve multiple puzzles to reach the labyrinth, and are confronted by a mysterious illusion.
EPISODE 6
Someone Important
Hajime and Kaori, separated from the others, move deeper into the labyrinth; they encounter an even more disturbing illusion, but Kaori has more important concerns -- whether or not to continue this relationship with Hajime.
Toshinari Fukamachi
Yuki Kuwahara
Minami Takahashi
Saori Onishi
Yoko Hikasa
Yumiri Hanamori
Kinji Yoshimoto
