(DISCONTINUED BUT ADOPTED) Sawada Tsunayoshi and Kuroko Tetsuya are both childhood friends who haven't seen each other in 7 years and have been out of contact for 4 years . After 7 long years of waiting, they finally meet again. But with the title of Vongola Decimo comes danger and stress like no other. Tsuna finds himself in a predicament once an assassin reveals his title as a mafia boss to Tetsuya. What will the young Vongola Don do? Kuroko's family tree has been a secret for generations with only a select few knowing of anything. But soon enough, with the help of both old and new friends, he finds out a century old conflict and maybe a sibling that's been tucked away from his memories. (Disclaimer: I dont own Katekyo Hitman Reborn or even the Kuroko no Basuke. They belong to Akira Amano and Tadatoshi Fujimaki respectively but the general plot is mine though) (Cross posted on Ao3 and Fanfiction.net)