You're an Spy from Germany, sent by Government for special mission to spying The Mafia Boss in Japan, Zarro. When you're in Zarro Place, there's Ball Dance party Going and you're disguising as one of the Guest

As you search for Zarro, you surprised by a Lady who take your hand while speaking sweetly

"You look lonely, why not Dance with me, Sir? I'm lonely too."

You want to refuse but you avoid being suspicious, so you accept. Without you knowing, she's Assassin that Protect Zarro