We came across a little gem of a place. Its a chain, but I have only seen 1 other store on the back side of AK plaza.
You are taking the 45 away from Pyeongtaek. Its the exit, road directly after the 12, don't go over the bridge for you will have gone too far.
Take that exit after 12 and go straight, continue straight as you get into the little town. Coffee Bay will be on the left after the first main intersection.
They have mini honey bread, (plain and choco)
See photo below.
My phone was out of battery, so I will update this post with more photos when its charged.
Below is a photo of what we had.
Rating: 4 out of 5 coffee beans!