The misunderstandings between Haru, Yuki, and Natsuki continue. But when Yuki decides to quit helping Haru, he awakens on top of a building staring down the barrel of a new water gun.

Duck, has declared martial law on Enoshima and are hunting for Haru and JFX. After a fail attempt by Koko and Haru to stop JFX, Haru becomes the alien villain to save his friends.