A man with dark ulterior motives and a lonely girl who ran away from home and has nowhere to go.Two people who would never have met in the normal world were connected through the darkness of the internet.Tsubame was not a complete beginner, but she was still immature, both mentally and physically.The man was kind to the girl and acted as if he were innocent, catching her off guard.Tsubame's immature and obedient body was soon developed, and she willingly surrendered to the desires of men.