This is odeng bar. odeng 오뎅 is Japanese food made of many kinds of seafood, and etc.
Korean love 오뎅 very much. 오뎅 is generally included in 떡볶이, or sold indepently.
Anyway, in odeng bar, odeng is served with liquor. It has been getting popular because It costs comparatvely cheap for drinking one or two glasses of liquor on the way home from the work.