Kagamine Rin & Len, officially code-named CV02, are a pair of Vocaloid software voicebanks developed by Crypton Future Media, headquartered in Sapporo, Japan. From Wikipedia
Japan’s mobile rhythm game rolls out August 4–13 with Phantom Thieves–themed outfits, free login gifts plus a Vocaloid ‘Life Will Change’ cover; global timing remains unannounced
