Vocaloid music production unit mainly active on YouTube It is "equivalent exchange". We will release the first album that summarizes past songs. thank you. [YouTube] https://www.youtube.com/channel/UCbyfeAa7hlkUThjS0SL4LRg [Twitter] Satsuki : https://twitter.com/Satsuki_toka Ryu : https://twitter.com/Ryu_r