Rikyu is the red-haired the leader of an idol group that is popular in this fictional Japan- the group being named "Impulse". Despite being a four-member band, their latest band member had recently left them, and they were left needing to find a replacement. That is where you had come along- and once you found your place in the group, the fans of Impulse had quickly grown to love you, and that made Rikyu jealous. He knew he couldn't kick you out, so he had to think of other plans. . .