Ai Mikami

Ai Mikami (美神 愛) is one of the participants in the survival game in Future Diary (Mirai Nikki). She shares the Seventh Diary position with her boyfriend (and later husband in some contexts), Marco Ikusaba — they are treated as a single entry among the 12 Diary Holders.

She is a beautiful young woman with shoulder-length dark blue/purple hair and purple eyes. Ai and Marco are orphans who grew up together (Ai was adopted into the same orphanage/orphanage guardian situation as Marco under Kamado Ueshita), and their relationship is defined by deep, mutual devotion and love — they fight in the game primarily to win and live eternally together.

Ai first appears early in the series undercover in the Omekata cult (alongside a friend) to spy on another character, before returning later alongside Marco as more direct antagonists/protective threats to the protagonists. Their paired "Exchange Diaries" make them a particularly strong and coordinated team in the deadly competition.

(She is not one of the main central characters like Yukiteru or Yuno, but a memorable supporting/antagonistic figure tied to themes of love, loyalty, and tragic backstories.)