Blue Submarine No. 6 (青の6号, Ao no Roku-go?, Blue Number 6) is the name of a manga series by Satoru Ozawa, which was subsequently developed into a four episode OVA series by Gonzo.
Recently Shouji Murahama of GONZO stated with NewWords Magazine that a live-action Blue Submarine No. 6 movie will be produced for approximately 10 billion yen (US$84 Million). This is set to be G.D.H.'s first live-action project with 30 more live-action projects under consideration.