Shoujo Kesshou Kokoro Jikaru
Other titles :
少女結晶ココロジカル, Shoujo Kesshou Cocological
Author(s) :Takaoka Shiyu
Year 20XX, everyone is crazy to dance in the virtual world BOX, but at Kokoro Koyomi's house the BOX is banned. For this reason, Kokoro logins in secret, but remains trapped in the virtual world because of a mysterious virus.