Hoeru Inu to Gomasuri Neko

Karin, has to take on the debt of 20 million yen owed by a host she has fallen in love with. The yakuza, a moneylender, offers her a deal. The deal is that if she falls in love with a certain man, she will get all the money she owes. Hanashi is forced to accept the deal, but the man is a stubborn. If she fails, she's in big trouble.