Volume 3 (Manga)

Information
Noir visits the Adventurer's Guild on a school holiday. What his witnessed there was a feud between receptionist Lola and Sarah]]! Lola suspects Sarah is fraudulently robbing her adventurer. The two receptionists will bet on the position of Noir and will compete in the receptionist ranking! Noir goes to the 7th basement of the unexplored hidden dungeon to win Lola.