Sherella reveals trailer of 1st single Published 2015-04-10 14:54:00 Author suji Tags release Sherella has released a new trailer of their first single, 「空の時間」(sora no jikan), which will also be distributed at their first live event, Fiction Impossible Mad ingranaggi ~廻る歯車はまるで唄うかの様に~ on April 17.