All of them are 18. Hajime Hinata, Nagito Komaeda, Gundham Tanaka, “Byakuya Togami”, Teruteru Hanamura, Nekomaru Nidai, Akane Owari, Chiaki Nanami, Kazuichi Soda, Sonia Nevermind, Mahiru Koizumi, Mikan Tsumiki, Fuyuhiko Kuzuryu, Peko Pekoyama. Hiyoko saionji