KAORU MIZUNO

Kaoru Mizuno(水野薫, Mizuno Kaoru) is a member of the Shimon Famiglia. He previously attended Shimon Middle School, but he and his family transferred to Namimori after an earthquake hit their area. They chose Namimori because it is relatively earthquake free and they are invited to the Vongola Decimo's Inheritance Ceremony. He is the eldest of the 7 students who transferred to Namimori Middle School. He was grouped with Yamamoto to protect Tsuna by patrolling the sports facilities in Namimori Middle School. He is the very first to be confirmed as an antagonist in the Shimon Famiglia.
Kauro is one of the eldest members of of the seven transfer students, and one of the few members that doesn't resemble a middle schooler. Kauro's appearance is similar to the rest of the Shimon; he is often seen wearing his school uniform and is very tall and fairly muscular with blonde hair. Kauro also has red eyes, a trait shared amongst the other members of Shimon. Because of this, he's often labeled as a "hooligan" due his appearance.
Many people are afraid of him because of his appearance, which has been described to look like a "Hooligan;" however, on the inside, he is actually a quiet and shy person. Yamamoto is the only one who is nice to him and the first person to call him friend, and this made him happy, as seen from his tears.