she studied under Miku as her apprentice until one day, when Miku got sick and tired of the restraints of the Joker status and left her mask and cards behind. Wendy donned the mask and pocketed the cards, assuming the position as Joker. When Wendy performed her ritual the first time, Robin was entranced by Wendy's voice, the whole thing played out as in the song Joker until after the song ended. Wendy stayed in the Castle and Robin advanced on her. They grew intimate that night, but Wendy's mask was never removed. The next morning Robin disappeared. Wendy searched all over for him, but she never found him.When performing the ritual song, one evening, she contracted a young female named Mitsu, who was too young to gamble, so Wendy set her aside and trained her as her apprentice. Little did Wendy know, Mitsu had a twin brother, Sumi, who searched for her the moment she went missing from the orphanage where they lived. Sumi showed up at the castle and was trained alongside Mitsu as the first male Joker. Robin showed up when they did, he was too in love to give up Wendy. Shortly after, Rin and Len Kagamine showed up at the castle, their parents went on a business trip-they never returned. Mitsu instantly took interest in Len, slowly their romance grew, Sumi and Rin, at a slower rate. That is-until the death test. Mitsu and Sumi were killed by a card that Wendy used to induce sleep, their souls went to the underworld for three days, they sat at the table of the Evils. They could not eat, or displease the Daughter of Evil. They endured questions from the Evils the next day, they could not answer untruthfully. Then they endured horrible torture. They could not cry out. The twins passed the test and returned to life-as teenagers. Life resumed to normal, Mitsu and Sumi even began to attend school with the Kagamines, with Mitsu's help, Sumi finally asken Rin out on a date