Q-six is going to release the Bertille ( ベルティーユ ) Physical Education (Pool Ver.) Limited Ver. ( 体育授業（プール編）流通限定版 ) 1/6 PVC figure form the eroge/anime “Walkure Romanze” ( ワルキューレ ロマンツェ[少女騎士物語] ). Will be released in September 2018. Around 300mm tall, 15,800 yen. Select stores exclusive.
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This Bertille Limited Ver. is "Select stores exclusive" but Q-six didn’t say which ones. I saw it on Amazon (JP) and a few other online stores that I usually use. If you can’t find it on your favorite store, just search around and you should be able to find it without any problem. =]