The series ends on an ambiguous note. Yui is shown standing on the balcony with Ayato, who returns her cross necklace to her. As she takes it, she drops a rose, symbolizing the loss of her human life and her new role as a member of the household.
Ayato administers the potion to Yui via a kiss. She awakens, but the episode implies she has transitioned—or is in the process of transitioning—into a vampire. Diabolik Lovers Episode 12
Watch a detailed breakdown of the finale's events and character resolutions in this anime review: Episode 12 | Diabolik Lovers Wiki | Fandom Contributors to Diabolik Lovers Wiki Diabolik Lovers Wiki• Dec 9, 2013 Original Air Date December 9, 2013 Season Season 1 (Finale) Streaming Available on Crunchyroll Next Season Followed by Diabolik Lovers II: More, Blood The series ends on an ambiguous note
In the final episode of Diabolik Lovers Season 1, titled the Sakamaki brothers deal with the aftermath of Yui Komori stabbing herself to prevent Cordelia from fully possessing her body . Plot Summary Ayato administers the potion to Yui via a kiss
Following her suicide attempt in the previous episode, Yui lies unconscious. Reiji prepares a potion to "erase" Cordelia's presence from Yui's heart forever.