By-Sexual (stylized as BY-SEXUAL) was a Japanese visual kei punk rock band from Osaka. They were active from 1988 to 1995, when vocalist Sho left the band and they went on hiatus. In August 1996, the remaining members restarted the group under the name By-Sex (stylized as BY-SEX) with Ryo taking over vocals in addition to guitar. In February 1998, Nao left and the group disbanded.