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Also, my mistake last night, it seems that the special gifts are for Pre-order only :(
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There's still hope for international fans to get the special gift actually. You'll have to ask your local toy store to start pre-order from their Japanese suppliers now.
Japanese online stores like Amiami has both versions for pre-order: with special gift, without special gift. ^^;
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Image from Amiami.
No separation on other stores like Happinet Online, Amazon Japan, Hobby Stock though.
March 27th release, 18,900 Yen (inclusive of tax).
Images from official site.