The first episode of the dangerous growth story of four men and women! When she was in junior high school, Akane, who was not good at socializing and was isolated, was saved by being called by Yurina, who had transferred to her school, and became her one-of-a-kind best friend. Since then, the two have been so close to each other that their surroundings are suspicious, but one day when Yurina and Kenta collide, the relationship begins to change.