Groups
- ks works 13
- kukudou 13
- kurimanjuu 13
- kuroi mikan no naru momo no ki 13
- kuroneko waltz 13
- kuronekobone 13
- kyou majo 13
- kyouretsu hiyougeka 13
- lanthanein 13
- lapislazuli triple star 13
- le.chocolat 13
- left 13
- lilium kyouwakoku 13
- lillian 13
- lilliput 13
- lionoil 13
- little cheat-ya 13
- looking for 13
- love addict 13
- lovepotionno.9 13
- low-tension 13
- luxuris 13
- lv43 13
- lyricalize 13
- m and d 13
- m.a.d works 13
- maa kuaru-ke 13
- mada maniau kamo 13
- make pig press 13
- make3d 13
- mana 13
- manekineko 13
- mangosteen 13
- marui don 13
- marukana seimen 13
- mat 13
- matilda 13
- megalomania 13
- meiousei presents 13
- mememery 13
- meshiya 13
- messiah syndrome 13
- mi 13
- midnight pleasure 13
- midori no niwatori 13
- mijiishi 13
- milk cocoa shake 13
- milky souffle 13
- minna shindoi 13
- mirabilien fabrik 13