Haikuo Soft (ハイクオソフト, Haikuo Sofuto) is a Japanese visual novel studio known for creating adult-oriented bishōjo games. The company began in 2001 as a dōjin soft circle named Haikuo (ハイクオ) and created six games in that time. Haikuo Soft released their first title Sukumizu Police in 2004 after transitioning from a dōjin group.