hey! so it is a hard find and u need to check the opening times (sometimes its randomly closed even when it shouldn't be lol and if it is closed it doesn't even look like a store is there at all cuz there are blinds covering it) - the store is called giftchannel - its inside siam square right next to the back side/back entrance of daddy and the muscle academy (try asking someone who works there - I think that store is very easy to find since there's an outside/inside entrance) I hope you find it!♥