Groups I know:
~ Morning Musume
~ S/mileage
~ Berryz Koubou
~ °C-ute
~ Dream Morning Musume
~ AKB48
~ Tokyo Girls' Style
~ SNSD
~ Fairies
~ 9nine
~ SCANDAL
~ Oha Girl Maple
~ f(x)
~ Watarirouka Hashiritai

Info: I'm a WOTA AND OTAKU