Rika Manabe

Rika Manabe is one of the main protagonists of the series. Rika is a high school student and Naoto have been friends with her since childhood. And over time she began to feel something for Naoto. Before the summer started, Naoto confesses his love for Rika, and agrees to be his girlfriend. But at that time, a demon appeared to do perverted acts with her, using the eternal worm. But then an angel, Luvriel came and saved her, but was wounded during the battle. Later during the series, Luvriel explains that demons and angels were at war she agrees to be his replacement the fight, but they must reload their love and have sexual relations with anyone so they can fight. She at first wanted but convinced Naoto and then later becomes Jiburiru. Rika has always felt guilty about having premarital relations since she always dreamed of staying a virgin until marriage, and she still hates when Naoto is too corrupt. In the third game, her love to him gets deeper than previous games.

Personality
A quiet and sweet student who has been with Naoto since childhood. At her childhood, Naoto doesn't seem to be getting along with Rika pretty well back then, but when he got close to her, they were really close friends. As Naoto accepts to be her boyfriend, she cried of joy. Suddenly, Asmo appeared above a tree and he declared to attack and kidnap Rika with tentacles. Naoto tried his best to save Rika, but he couldn't defend against the devil's power. But when Luvriel arrived, she was wounded during the battle. When the battle is over, Naoto and Rika took her back to the apartment. Rika was worried about Luvriel and wants to take her to the hospital. As Luvriel woke up, she wanted to find a devil whom is attacking her. When she told stories about how angels and devils fought. Rika accepts to be a part of the army. Unfortunately, for Naoto, angels are supposed to be girls, but when Luvriel told Rika that she has to lose her virginity, she felt shocked and worried. She was later got kidnapped at the beginning of the second anime and transforms into a darker form of herself Dark Jibril.

Jibril
Jibril is one of the first of the three Devil Angels, as well as the only one not related, by blood or choice, to Naoto. She is Luvriel's replacement in the first game, due to a mutually assured destruction strategy going wrong. She was captured in the second game by a giant worm creature, and over the course of the game, put through a perverse version of her training in the first game, and in the third game, she was weakened by the use of a spell cast through the corrupted hand of Dark Aries. In the third part of the game, she seems more accepting as Jiburiru, regardless of the physical conditions that revise with the tentacles. Unlike the first and second, Rika has a personality more active and more changed in appearance in the third game.