Hitsugi Kirigaya

"Hi I'm Hitsugi Kirigaya."

- Hitsugi to Tokaku and Haru "I'm afraid you're wrong, I'm the real Angel's Trumpet, the heartless killer."

- Hitsugi revealing that she is Angel's Trumpet "Had Hitsugi’s victims been strangers to Chitaru, there’d be no reason to kill her, but she was, and Chitaru won’t abandon her mission. Still, after some nice swordplay between Tokaku and Chitaru, Hitsugi fesses up, and later forces Chitaru’s dagger into her own heart, killing her. We’ll never know if Chitaru would have actually killed the girl she loved; considering she promptly poisoned herself right after, I’d say probably not. In any case, it’s a suitably tragic end, and we were invested enough to feel bad about it and wish things could have turned out differently." "It was a good move to combine two assassin’s backstories, though in Hitsugi’s case, we don’t know any more than Chitaru why she killed her mentor’s daughter. Maybe it doesn’t matter; it was a job, and it was the job that made them enemies, even though they loved each other. The short shrift goes to the play’s director, Shiena, who is poisoned by Hitsugi, hospitalized, and disqualified. I guess that saves the show the trouble of giving us her backstory. First and foremost, this was an efficient episode in which three assassins fell, leaving only five (excluding Tokaku) left with seven episodes remaining. But it also happened to be one of the show’s more intricate and affecting episodes, due to the use of the Romeo & Juliet play to serve as a mirror of sorts for the couple of Namatame Chitaru and Kirigaya Hitsugi."

- The story of Hitsugi Kirigaya Hitsugi Kirigaya (also known as: The Angel's Trumpet) is a professional manslayer/assassin who killed Chitaru Namatame's mentor daughter. She is expert in utilizing poisons. She is the overall primary antagonist of the 2014 anime series Akuma no Riddle. She played a major role in the series due to being one of the main characters.

She is the main antagonist of the episode 6, being revealed as the heartless killer named Angel Trumpet, Hitsugi Kirigaya is considered as the secondary leading villain of the past episodes, and having a supporting minor appearance in the last episode. Though in the manga, she is also one of the characters that being focused primarily.