桑島 由一

Kuwashima Yoshikazu, born September 26, 1977, is a Japanese game scenario and light novel writer and lyricist from Tokyo. He first debuted as an illustrator for the magazine Gakken BOMB. Other notable works include:

Novel:
• Kamisama Kazoku

Manga:
• LastBoss LoveDeath / LastBoss LoveDeath

Games:
• Grisaia: Senjou no Barcarolle