CEO has been having financial and management issues so I don’t recommend them.
Insta, Ten Ten and Tomato are the three most popular. And yes, you will need a reservation.
Avoid Boomerang and Versace because those are male hostess who cater to female customers.
There are adult bars (an open bar and you can just order a beer for you and the girl) such as Waba (와바, 161-18 Northern Blvd), Blue Me (블루미, 161-21 Northern Blvd), and Spark (스파크, 161-19 Northern Blvd). The girls here are Yanbian ages mid-40s and above. They are not attractive and wear short skirts and a tank top. But if you want to mess around with a Yanbian GILF over a beer then these are the places.