Upon hearing that Dave and I went to the Hello Kitty Cafe, one of our friends suggested that we go to the Charlie Brown Cafe as well. So yesterday, Dave and I looked up the directions to the cafe and got on a bus headed to Hongdae. The directions we had said to get out of exit 5 of the Hongik University subway station. We usually take the bus to exit 9, so we went down into the subway to find exit 5.
Unfortunately for us, the directions we had were a little outdated. In our defense, I looked at multiple websites to confirm we had the correct directions and none of them mentioned an exit different from exit 5. The Airport Railroad also stops at the Hongik University Station and appears to be a convenient new addition, unless you are looking for exit five which has moved in the exact opposite direction of the old exit 5.