It is not a musical group composed of 48 girls from Kabuki-chou; in fact, it is just one sad cheater with quite a few accounts. One player, kbk+ has been using alternate accounts to assist himself (in a stupidly obvious way) to win games at 7447. After losing a streak of games (because, quite honestly, he sucks at mahjong, life, and everything else), he decided to find his own way to win. Making sub-accounts like “geodude3” and “Broseph” to hand himself all tiles he needed. The problem is, our dear friend is too stupid to realize we can see his games and will can his ass.
If you are the cheater, kbk, read until the end. I have a message for you at the end of this post!
Right now WuMingZe is in a game with him just to catch him red handed once more.
This came to my attention during a visit at Brazilian anime forum, Minna Suki, where other players of the league were talking about their games with him. After further researching the content of his games, I found (and then posted in IRC) some discards that were getting increasingly suspicious, such as these: