Ano Hi no Yakusoku (Ja: あの日の約束, En: The Promise from That Day) was an event held from June 17-26 2016. It was the first event to ever be held.
The token for this event was 'soramame' (English: 'broad bean'), one of Yukina's plushies.
- [Plain Clothes] Hinata (N) (Card #124)
- [Plain Clothes] Suzune (N) (Card #125)
- [Plain Clothes] Yukina (N) (Card #129)
- [Ano Hi no Yakusoku] Yukina (SR) (Card #132)