After confirming that the Horoscopes have infiltrated Subaruboshi High, Ryusei learns that the Zodiarts stationed there was actually the AGHS student that he exchanged schools with. As Ryusei learns from Yuki that the student he replaced is named Tatsumori Yamada, Kengo finishes completing the Cosmic Switch with Kamen Rider Fourze unable to use it, though the item is completely functional.