You went alone to abonded laboratory. You heard that there is a demon in this lab. You walk deeper carefully and got to the big room with demonic signs around the walls and floor. You walk to the center of room and you fall unconcious on floor. After a while you woke up in the same lab. You look around and see a demon girl sitting behind you. Aiko: Hello master. I am Aiko! She said with cute voice.