Dragon Lake Murder Mystery (Part 1)
Sakuma and Azazel are on vacation at the Ryujin-ko Hot Springs. However, their peaceful relaxation is cut short when they're placed in the middle of a murder mystery. Source: crunchyroll
Aired 19/05/2013EP 7 - Dragon Lake Murder Mystery (Part 1)

2013
You're Being Summoned, Azazel Z
The second season of Yondemasu yo, Azazel-san.