Shinsetsu Kamiya Ukyou ~Shokuzai~

Ukyo is registered as a resident lawyer at Lithuania Law Firm.
His division does arbitrage over reduction of excess debts of companies. One day two detective ask Ukyo to cooperate with finding manager of such company Okita who is suspected in bills fraud. Ukyo protects his client from detectives pressure, but one day Okita suddenly admits the crime and wishes to go to police. The night of the same day Ukyo spends a night with a girl. Five years later they get to meet again at surprising circumstances.

[From vndbreview]