User blog comment:B214/Season 3 discussion/@comment-16281343-20150411090919/@comment-16281343-20150411100606

Episode 4 Spoiler: (rough translation) "In order to defeat Loki, Odin returned to Northern Europe to bring back Mjollnir. Rias and us volunteered to hold off Loki until Odin returns. A seesaw battle in an all-out war...."

Episode 5 Spoiler: (rough translation) "The training camp in the Underworld ended and everyone returned to Japan. Issei struggling with his summer homework, asked Akeno for help and in exchange he will go on a date with her. But..."