Dusk Howler(2014)

Dusk Howler

Kim Jee-Ha comes from a good background with decent grades and test results; however, he has one big flaw - when it comes to official events like university interviews for example, he is horrible. To overcome his social awkwardness, he embarks upon the virtual reality game Trikia where he meets an eccentric high level undead Nine - his future guild master.

Source: Manga Updates