What is gunji?

Name: Sawada Tsunayoshi/Sawada Tsunayoshi

From "Family Education"

Japanese Roman character: Sawada Tsunayoshi

Nicknames: A Gang [loser, idiot], rabbit [fan's favorite name] (tuna pronounced in Japanese, the house number of A Gang's room, and the amulet given by Kyoko all have fish patterns). Nai Nai, the mother, is a native Japanese, and Sawada Guang Jia, the father, is of Italian origin, and is the leader of Vongola in the 10 generation. Because they are not good at studying or exercising, they are called "homosexuals" by people around them.