Uraomote no Koiwazurai

Igarashi Ryou has good looks and the perfect job at a bank. He even has a fuck buddy, Takakura Asahi, a charming and stylish older man. They’re madly in love—or so Ryou believes—so he decides to take the next step: he proposes! "I'm not looking for that kind of relationship." He gets totally rejected, shattering his pride and heart! Ryou throws himself into his work, hoping to forget all about his broken heart. One day, Asahi shows up at the bank asking for a loan—unshaven, disheveled and shabbily dressed, he looks completely different from before. Things get awkward as their relationship teeters between the personal and professional. Even the section chief, Iwasaki, gets involved! (Source: Takeshobo, translated)