High School D×D

S03E01 Summer Break! Off to the Underworld!

Title: Summer Break! Journey to the Underworld! Plot: As summer vacation approaches, Hyodo Issei is eagerly anticipating his time off, but his excitement is interrupted when he learns he must join Rias on her trip back to the underworld! This unexpected journey promises new thrills, but amidst it all, Koneko seems to be behaving strangely, adding an air of mystery to their adventure.