The episode begins with the aftermath of Shido's date with Mukuro. In a shocking turn, Shido discovers that his friends, including his sister Kotori and the other Spirits, have completely forgotten his existence. This is revealed to be the work of Mukuro’s Angel, , which she used to "lock" the memories of everyone close to him. Her goal is simple but extreme: to ensure Shido belongs only to her, free from the "clutter" of his other relationships. The Return of Inverse Personas
Origami also undergoes a personality shift back to her "new timeline" persona, which remains unaffected by the memory seal. The "Kiss Contest" Date Date A Live IV Episode 7
See the unique rivalry and the 'date competition' that unfolds between Mukuro and Inverse Tohka in these episode highlights: The episode begins with the aftermath of Shido's