I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 7 (manga)

This week in the life and times of Azusa, the Witch of the Highlands,it’s time for-a
music fest?! After taking a troublesome travelingminstrel under her wing, Azusa and
her family set out to find the soul ofmusic...at a demon music festival!! Will Azusa’s
new friend be able tofind her inner muse...?!