A Song Called You ~[ Meldris]~

Prince meliodas has been in love with zeldris, since he was a kid and after zeldris's death, he promise himself that he'll find his beloved no matter how long it takes?
Will he be able to find the person he loves even though he's no longer a human but a spirit or even if he doesn't remember him? Two souls bonded by one song.... but can two different beings with great love for each other be together?