Love Advice from the Great Duke of Hell

The girl of your dreams barely knows you exist. Your friends can’t help. Your family is clueless. So where do you turn for love advice? Who can provide you with that essential assistance for the lovelorn? If you’re average everyday teenager Paul, you summon a powerful demon from deep in the recesses of Hell and frankly, hope for the best.
Source: LINE Webtoon

Original Webcomic:
Digital, Print

Official Translation:
French, Spanish, Thaï