Two years have passed since the events of the previous part, Ike is now nineteen years old, and she works in the already familiar agency. This time we are treated to a detective investigation into the mysterious disappearance of schoolgirls, behind which is the school board and a mysterious force that looks like a pillar of light from the floor, attacking the girls with beams of light and striking them in the soft spot. Aika’s old acquaintance, Eri, tasks her with solving this mysterious case, though she’s actually looking for new adventures herself. Will our heroine be able to figure out where the mysterious rays of light are growing from and why they are doing this mess?