Police said that Arai typically used telephone dating clubs to find men looking for sex. Unlike most other female callers to the clubs, Arai would tell men that she would have sex for free
She would then use the lure of luridness to get the man into a love hotel, where she would offer him a drink. The drink would be laced with a heavy dose of sleeping pills that worked within minutes.
Once the man had fallen asleep, the 43-year-old woman would go through his belongings, stealing cash and other valuables before she fled the love hotel