School Shampoo

The main character, Soji Shirakawa, is 14 years old. He's a bright young boy, though a bit peculiar, and is nicknamed "Shampoo" by his peers. Soji is a descendant of the ancient Mu people and is an esper, but his skills are still in his infancy. One day, he's teased by a bancho on the train, and Soji uses his psychic powers, but...?