I went with a friend of mine that's really into the anime merch. He wanted to have a look around and I accompanied him.
My impression coming away is that this is a store that excels at making you feel unwelcome. As soon as they saw that I wasn't likely to buy anything their attitude changed. They repeatedly asked whether you needed help even after you clearly said no. They have someone follow you around to ensure that you feel uncomfortable doing anything (and likely to ensure I don't steal anything). I assume the intent is for me to leave the store as soon as possible. As soon as I picked up a book they 'remind' me that you can't read in this store. It made me feel very uncomfortable throughout my stay here, to the point where even if I had found something interesting I would not buy it here.