Just the other day, I got married to a man with a stepchild. My stepdaughter, Kokoro-chan, seems like it's going to take some time to get close to her, given her age. But I should have been living happily with my new family... Then one day, Kokoro-chan started inviting her school friends over and instructing them to attack me!! Desperately, I begged for her help, but she just looked at me being violated with a mocking smile. And from that day on, I began to be repeatedly assaulted by her classmates...