Sawada Tsunayoshi is the older twin brother of Sawada Jyuichi. Tsuna is constantly being bullied by him and everyone else. The twins are well known at school, though in different spotlights.
Jyuichi is favoured for his Charm, Good Grades, Athleticism and his so-called 'Good Attitude'. He was a 'Perfect Student' in everyone's eyes.
While Tsuna is the opposite of him. 'Dame-Tsuna' is his nickname. He is known for his Bad Grades, Bad Sportsmanship and Extreme Bad Luck. He was a 'Failure'.
But it was only a mask he has to put up to protect his brother. Tsuna was once stood alongside his brother on the same spotlight.
The twins does not really hate each other.
The Sawada Twins - one attention seeker and one raging in jealousy. But both are fighting to protect and keep each other.
But everything seem to change.
In just one accident, their life changed.