Onna Katei Kyoushi Jitka-sensei to Misshitsu ni Itara Maru-maru Shichau Kamoshirenai

A spin-off work centered around Izuka, who appears in If You're in a Closed Room with a Girl... The protagonist may be shy, but she's popular in her fantasy world! Plus, she gets the added bonus of being able to use psychic powers when she gets excited! Use your imagination and psychic powers to help Izuka-sensei escape from the lock-in.