Similar to the word kweeb but instead of being obsessed with every korean there just fans of manhwa,K-pop,and K-drama
A: Wow!! You such a koreaboo
B: actually I'm a kotaku not a koreaboo
Similar to kweeb they are people who are just fans of korean manhwa and korean games with no obsesion what so ever with korea.
A:omg your such a koreaboo
B: I'm actually a kortaku