Love SOS 

A struggling cupid candidate Tae-Hwa goes through series of tests to finally become a cupid but his troubling past is holding him back. His test partner Dan-Baek, an elite student, dismisses Tae-Hwa for being a bad student but finds out the true story of Tae-Hwa and how he became a cupid candidate... (Source: Pocket Comics) Note: Chapter count includes a prologue and an extra.