After fending off Keheheh and Tzveta in Russia, Shy returns to Japan, where she encounters the mysterious Ai Tennoji―a runaway Kansai girl with an unexpected background! However, Teru hardly has any time to fret over making a new friend when Amarariruku strikes again in a daring attack! With the full attention of the hero community focused on Japan, can Shy stand up to the pressure…?!