Sleeping with Money(2006)

Satsutaba no Bed de Nemure

Tatsuro, a good-looking yakuza who turns every head, is looking for a benefactor to take on his debts. Seizing that opportunity is Sagami, president of a large bank. Even with all the wealth and power he could imagine, Sagami only wants Tatsuro - controlling Tatsuro's pure body using pleasure and forcefully instructing him in enchanting titillations.
(Source: DMP)