10 volumes of mostly one-off chapters, revolving around ten male/male pairs somehow connected to Blue Boy (a host club). Volume four opens with a \"semi/uke\" chart; those who hate relationships with rigidly defined roles will probably want to stay away. But if you like that sort of thing or don\'t mind it, the series is a fun read, and the payoff in the last few volumes, when certain earlier events fall wonderfully, beautifully, perfectly into place, is HUGE.