『Sonoko Nogi』

Mimori's classmate during elementary school who first appears in Washio Sumi wa Yūsha de Aru and uses a large trident in her hero form. She nicknamed Mimori"Wasshī". As a result of using Mankai twenty times, she loses the use of most of her limbs and becomes unable to move, and afterwards is put in direct supervision of Taisha as a trump card. She later appears in the anime series, where she informs Yūna and Mimori about the truth behind the Hero System. After the events of the final episode, she is shown to have regained her lost body functions and later joins the Hero Club.