Vongola Cloud Guardian

Kyoya Hibari:is the leader of theNamimori Middle Disciplinary Committee, prefects who are in fact a group of delinquents that are all loyal to Hibari. Hibari himself is a violent delinquent who uses his status to harass other students. As shown several times in the series, he prefers to be alone and cares little for his subordinates. He loves Namimori more than anything, and will often say "I'll bite you to death," or "kamikorosu," to those that disturb Namimori Middle School. Hibari is very proud of his school and is apparently the only person who even likes their school's anthem, even using it as his ringtone. In the Kokuyo Arc, he adopts the Kokuyo Assassin Birds' bird. The bird (subsequently nicknamed "Hibird" due to its connection to Hibari) becomes attached to Hibari. Hibird can also sing the school's anthem, taught by Hibari, who loves it. Reborn piqued Hibari's curiosity in the mafia early on in the series and Hibari considers him a worthy opponent, having a strong urge to fight him.