Shall we date?: Ninja Assassin

In Edo-period Japan, your parents were falsely accused and executed for crimes they did not commit. Grief and anger have led you to the only people who might help you get justice: a shadowy network of vigilante ninjas who operate outside the law and ask only that you pay. Contact attempts fail. Then one of them appears—takes you to a tea house, listens to your story, and offers to bring you inside. The people who murdered your parents are still out there. The vigilantes are your only path to them.