Jinsei wa Barairo DaJinsei wa Barairo da; Life Is Rosy; 人生はバラ色だ。

From Forever More: After his parents were killed in an accident, Yayoi assumed their hundred-million yen debt. He was being pursued by collectors when a mysterious man, Kazu, appeared before him and offered to take on the debt for him if he would become Kazu's...