First OAD bundled with the 16th volume of Kami-sama Hajimemashita manga. One of the included anime based on the story from the manga's 15th volume, while the other contained an all-new original story. The disc also featured a bath scene with Tomoe and that character.

2-5 OADs bundled with the manga's 22-25 volumes, the sixth one - with an official fanbook Kamisama Hajimemashita 25.5.

Chronology:
EP1 takes place between season 1 and 2.
EP2-5 takes place after season 2 with skiping 2 volumes (12-13).
EP6 adapts only epilogue of manga with skiping 8 volumes (18-25).

Source: ANN

AniDB | ANN | MAL (2) (3) | TVDB | Wiki (en)

Prequel: Kamisama Hajimemashita
Prequel: Kamisama Hajimemashita 2