La Mèche

Ha-seon, burdened by a crippling appearance complex, finally visits a plastic surgery clinic with the money he's been saving up. But when the merciless sound of "insufficient balance" dashes his hopes, he turns in despair to a loan company as his last resort. And there, he encounters Si-gyeon, a man so beautiful he seems almost like an angel...

"Even if you're going to leave, you'd better give me a taste before you go."

(Source: Lezhin Entertainment, translated)