Yami No Ketsuzoku Harukanara Kioku (TurboGrafx)
CheatingDome.com
Level select
Press Up, Up, Down, Down, Left, Right, Left, Right, II, I, I, II, Right, Left, Right, Left, Down, Down, Up, Up at the title screen.
Sound test
Press Left, Right, II, I, Run at the title screen.