Bell, the heroine is half-demon, a cow girl to be precise. She does the farm work everyday. She meets Hiro who was upset with the result of his body measurement. He was upset because his height hasn’t grown much compared to others. Bell suggests Hiro to drink a lot of milk, she also gives Hiro the farm’s milk. Hiro was surprised with the milk she gave and wanted more of them. She tells him that was the last of it for today. But seeing Hiro being excited, she lead him to an empty storage building. One thing Hiro didn’t realized. The milk he just drank is actually came from Bell’s breasts, and if he wants more of it, he’s gotta milk Bell’s breasts.