Behind the mask

He is dame, he is bad at academics and sports or at least a lot of people think so but he is hiding behind a mask Sawada Tsunayoshi or how they call him in mafia world "Cielo 27" is worlds greatest hacker and assassin in real life he acts dame to not attract attention because who would suspect the dame harmless guy to be worlds greatest hacker/assassin Some people even say Cielo is stronger than Nono himself. Tsuna's mother knows about his secret and even tries to force him to stop the 'dame' act, But Tsuna has a problem he has a younger twin brother named Sawada Hiroshi who is very annoying and always bullies him it's not hard to hide his secret from Hiroshi thought. People call Hiroshi 'prince' because he is good at athletics and good at academics when he is around people he puts that 'kind' mask on but at home he bullies him. One day when a certain baby comes to Sawada household will Tsuna keep his secret hidden or that certain baby will find out?