synopsis Jdorama.com :
Newly graduated Kumiko Yamaguchi wants to make her mark on the Japanese educational system as a teacher. All well and good until she finds out that the school she'll be teaching at has its fair share of troublemakers and rabble-rousers. The ruffians at the school don't frighten her though for she has a secret of her own-she's a fourth generation crime syndicate member and next in line to head it up. She's gone straight and wants to be a teacher though, but she's one person in whose class you don't want to be caught fooling around!