Hina wa Mitsuiro no Koi ni Torawareru
Ch. 10: Uke had unrequited love for his best friend. Uke felt devastated when he heard that his best friend was getting married. He hooked up with the seme, and soon learned that he was the new boss at the company. Seme started to pamper him, and he soon fell inlove and recovered from his past love. However, it all went downhill when the seme stopped showing his affections when the uke confessed; uke learned that he was nothing but a toy to the seme. With this new broken heart, he took the opportunity to transfer workplaces and left the seme. Now, with the uke gone, the seme realizes his feelings and starts regretting... yet... HE NEEDS TO SUFFER MORE!!! I don't see any proof of redemption!!! BETRAYAL LIKE THIS ONE IS NO JOKE!!!
Akatsuki no Yona