Reiji

The boy who is Masaki's cousin finds the Nanaki while visiting Nanakimura, and becomes separated from Masaki. When he reappears, he saves Maimai and the others from being attacked by Jack, and tells them about Nanakimura and the Nanaki. He also asks the bus driver to tell Mitsumune that he himself is Masaki's "Nanaki" and to help her.

In reality, he was Masaki's imaginary childhood friend, a presence who always supported her. However, when Masaki was attacked by Yura Mikage and Lovepon and called out to Mitsumune for help, he entrusted Masaki to him and joined the rest of the group at the lodge. After Masaki was accepted by Mitsumune, he suddenly disappeared.