Sweet Revenge

You once led a peaceful life with your family in the Seigoka neighborhood. Then one day, your parents vanished, leaving you a vast fortune—enough to live without ever working. But as a child, it meant nothing. You were taken in by your neighbor, the Tondas. Years later, you're an adult now. Uncover the mystery of your parents' disappearance, and along the way, it doesn't hurt to exact revenge for the wrongs done to you when you were young and naive. Does it?