Hmp. Odd combination of cliche, nuts, and use of cliches that are nuts. The "handed over to rich people for debts" cliche. The "uberposh girls' school with ludicrous customs" standard setting (which is my least favourite setting for yuri stuff). Generally, complete and utter artificiality and lack of plausibility and almost complete lack of characterization. It's rare I find a yuri series I just don't want to read more of, but this managed it.
Sure, the weird "family" thing is unusual in specific, but it's a gimmick, part of a general class of gimmicks that this kind of story uses to try to make something that sets it apart from the other ones (since they can't use, say, character). Basically this reads like a shounen, not like a yuri.
