Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka IV

After recovering from his fight with Asterius, Bell learns from Hestia that he has reached Level 4 and is warned by Fels that true peace between Orario and the Xenos can be only achieved after someone conquers the bottom level of the Dungeon. The Hestia Familia is given their first mandatory assignment from the Guild, which involves exploring the lower levels, a first time for Bell and the others. Hestia decides to form an expedition team, inviting members from the Miach and Takemikazuchi Familias to help with the task. Aisha volunteers to join the expedition as well and helps with Haruhime's magic training, while Lilliluka, who is one of the weakest members, accepts Daphne's suggestion to act as a strategist for the team, leaving the fighting to the others, while Welf also creates new equipment for the whole party. After finishing their preparations, Bell and the expedition team begin their journey to the lower levels, ignoring Cassandra's suggestion to postpone their departure after having an ominous dream.