Sen is a young man of medium height with dark, shaggy hair, and dark eyes, which are rather thin and lazy-looking. He seems to have a modest athletic build, the same as most of his classmates, and a slight tan. Sen is a level-headed person who remains mostly calm and focused on many occasions. He is also shown to be more mature than Neito Monoma Sen's Quirk allows him to make any part of his body rotate at high speed like a drill. He can significantly enhance his hand-to-hand combat skills by us