Twenty years after her twin brother Yukio was presumed dead during their hero internships, Pro Hero Rin Okumura still refuses to believe he’s gone. During the Paranormal Liberation War, she discovers that Yukio is alive and has been working under All For One’s influence for years. The moment they see each other across the battlefield, Yukio abandons the villains without hesitation and runs to her. Reunited at last, the twins fight All For One side by side, their bond and synchronization remaining unbroken despite two decades apart.