Una Bambola. All27

This is a world of puppets and puppet masters, though ordinary humans exist too. When Sawada Tsunayoshi was four, he formed a soul contract with someone and became that person's soul puppet.

Now starting high school, Tsunayoshi is having a rough time. His parents also died in a car accident, leaving him to live with Reborn, his older brother who isn't related to him by blood. But Reborn hasn't come to see him once in three years. Everything has been conveyed through Reborn's puppet, Basil.

At last, the person who formed a soul contract with Tsunayoshi appears at the academy in Italy.