Children's book Escape the room / cheeery from the back museum

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

Children's Book "br" Created by Poplar Kimi no Belle / WWASA 4 Brothers and Locked up in a Museum? Voices saying "I'm too excited to choose!" are appearing one after another! Popular love × survival series with 4 ending points! I, Haruna Amemiya, 6th grade elementary school student. One night, I went to school to pick up my homework that I forgot. I was locked up in Nazo's "Back Museum"! The ones who were also locked up were the 4 cool WWASA at school. It seems that the director of the "Back Museum" is trying to catch us and make it into an exhibition. It seems that he is trying to escape somehow in cooperation with the 4 brothers? Haruna Amemiya, 6th grade elementary school student. A girl who loves animals. The eldest son of the 4 brothers Renya TOKITO. Junior high school 2. President of student council with everything is perfect. Second son Kaito TOKITO and older twin brother. Junior high school 1. Haruna is always making pranks. Third son Yuto TOKITO and younger twin brother. Junior high school 1. He is kind and an ace of the soccer club. Fourth son Chikei TOKITO. She is in the same class as Hina. She is mysterious and unaware of everything.