Satomi's World. Satomi, a giant girl with a height of 186 cm and a weight of 71 kg, is a mysterious girl who loves reading, has a habit of delusion, and dreams of filling the world with ribbons. One day, Satomi finds an old envelope in the warehouse behind her school building. It was a love letter of unknown sender and recipient. Satomi starts looking for the owner of the love letter at random, but...