Shinshitsu no Kagi Kaimasu

By Namonai: After many years, Tsujidou Nao is reunited with childhood friend, Kashima Yuu, through a car accident. Left with no money and no car, Yuu decides to sell himself for 1 million yen to Nao.. as a slave! Nao slowly starts to fall in love with Yuu, but will his feelings be returned?