The original opening to Vampire: The Night Warriors (Darkstalkers: The Night Warriors in the US). This opening was only on the PS1 Japanese version.

If you'd like to help ban together in getting Capcom to make a new Darkstalkers, please join Capcom-Unity and start requesting.

Darkstalkers Online Edition Thread:
http://www.capcom-unity.com/ask_capcom/go/thread/view/7371/18569387/Any_Chance_Of_A_DarkStalkers_Online_Edition_Capcom

There is also the Unofficial Darkstalkers thread:
http://www.capcom-unity.com/capcom_games_discussion/go/thread/view/7341/723751/The_Unofficial_Darkstalkers_Thread