The Substitute Omega

5 years ago, Ria Gray confessed his feelings towards Hayden Smith. What he did not expect was for Hayden to accept his confession and they got together. Ria was so happy when he had a relationship with Hayden, even though Hayden treated him with a cold face. Ria still did not break-up with Hayden, thinking that one day Hayden would soften his heart towards Ria. But then, Hayden's childhood sweetheart came back from abroad and witnessed in his own eyes how Hayden, who is extremely cold to him, softened and dotted his childhood sweetheart. Ria realized that he was just a substitute for Hayden's sweetheart. Indeed, the cold hearted man softened, but not for him but for Hayden's sweetheart. Ria finally woke up from his dream and decided to let go of Hayden. He packed his things and left by himself. Then Hayden thought that Ria would be back within 7 days, but what returned to him was only a corpse. 5 years later, the omega that should be dead came back. And the cold hearted man quickly held his dead omega. "Riri, let's go home okay?" Hayden softly said. The dazzling black haired omega just smiled at Hayden then moved his hand away. "Sorry Mr. but who are you?"