Yes, theres a store in the third floor I think it was called Pokemania I think and my mom bought a Jungkook poster
Don't know what bts is, can't answer question that I don't know. Most shops there are selling gifts and souvenirs stuff. Foods are the most you will find there
You should contact them directly. I don't know what "bts" is. They do have a lot of shops there.
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