Alright so i don't have much time to write such a long review so it'll be short and simple this ova is defiantly related to the original story line AND it has an important influence on the actual story itself which im not gonna point out but it explains alot when season 3 might and probably will come out. Keima himself has a not much of an appearance in this OVA but its an important appearance still non the less as the fact that it relates to the story line. the base of it is the band getting together and trying to rival KANON, and becoming a goodband Keima teaching them so they can get a club ETC.
no capturing,and if you don't want to see a spoiler don't watch the ending credits.
that's all the time i have for now
excuse me for such a bad review its only my second review