Main Characters[]
Issei Hyoudou[]
At the beginning of the series, Koneko was the only member of the club who openly disliked Issei due to his perverted and lecherous nature, but she did admit that he was a hard worker and very determined. In Volume 5, Koneko started to develop feelings of love for him after Issei helped her overcome her fears of using Senjutsu, and Issei told her that he was not afraid of her and would stop her if she ever went out of control, giving Koneko the courage to accept her true self.
Afterwards, Koneko began to sit on Issei's lap, marking it as her territory, and she began competing with the other girls for his affection, often getting jealous whenever he gets close to another girl, particularly Ravel. During a Senjutsu healing session with Issei in Volume 7, she tearfully asks him to never use Juggernaut Drive again and states that she will keep doing these sessions for the rest of her life if that's what it will take to heal the life energy he lost, showing how much she loves and cares about him. However, she still insults him whenever his perverted side emerges (usually when it's not directed towards her specifically).
Koneko's feelings for Issei kept growing until they reached their pinnacle when they forced her into mating season and chose him as her partner, which she was only brought out of by her sister Kuroka. In Volume 11, she proposed to Issei whilst being attacked by the Hero Faction as well as grim reapers, in which Issei agrees to marry her as long as she's able to grow in height and bust. She was in shock after Issei's 'death', trying her best to hold in her feelings until she breaks down in tears after being scolded by Ravel. She was overjoyed upon hearing that he was still alive and embraced him when he returned. She is determined to marry him in the future, and will sometimes say that she will be Issei's bride one day. Koneko gave her first kiss to Issei after he protected her and Kuroka from the grim reapers, and Issei accepted her proposal in Volume 24, making her his sixth bride.
In Volume 25, Koneko became much more bold towards Issei, such as sleeping with him half-naked and wanting to reserve his child.
After witnessing her "Shirone Mode", Issei began having lecherous fantasies about her, waiting for her to mature to that bust size.
Rias Gremory[]
Koneko is very loyal to Rias and cares a lot for her after Rias took her in, and she helps her get out of her depression after her sister, Kuroka, abandoned her. Rias is shown to be protective of Koneko as she didn't want to hand her over to her sister, Kuroka, who had wanted to take her back, stating that Kuroka had caused Koneko a lot of grief. While they get along, they are sometimes shown to be competing for Issei's attention. Witnessing the growing relationship between Rias and Issei caused Koneko's mating season to awaken, although she managed to get it under control due to Kuroka's assistance. She considers Rias to be like a older sister to her and started calling her "(o)nee-sama" after Rias graduated, much to Rias' happiness.
Ravel Phenex[]
Koneko has a friendly/hostile relationship due to the fact she is a Nekomata and Ravel is a phoenix, alluding to the natural rivalry between cats and birds. Koneko sees Ravel as her main rival for Issei's affection, openly competing against her for his love. In Volume 10, while visiting the Underworld with the rest of the club with the exception of Ravel, Koneko stays attached to Issei as she believes that Ravel will take him away from her. However, they are shown to get along and become more friendly with each other as time goes on, usually only showing hostility to one another when it involves Issei, such as in Volume 14, where the two are shown to be fighting over the spot on Issei's lap. Koneko is also hinted to feel inferior towards Ravel due to her larger breasts, feeling that Issei prefers Ravel to her.
Yuuto Kiba[]
The two appear to have a positive relationship, as in Volume 3, Koneko was willing to disobey Rias's orders to help him find closure with the events of his past. Koneko sees Kiba more as a brother and even stated in Volume 3 of the light novels that she would "get lonely" if Kiba disappears; this would mean that Koneko really cares about Kiba.
Gasper Vladi[]
Koneko, being one of the three 1st year members of the Occult Research Club, gets along with Gasper. However, she does seem to enjoy frightening him, occasionally being spotted in the series chasing Gasper while holding garlic, something that he naturally fears because of his nature as a vampire. Nevertheless, she still cares deeply for him and is extremely protective of him.
Four Great Satans[]
Sirzechs Lucifer[]
Sirzechs was the one who rescued Koneko from being executed after Koneko's sister, Kuroka, killed her previous master and left her in Rias' care.
Vali Team[]
Kuroka[]
She cares for her sister, but she is angry at her for what she did to her old master even though she was right for doing this. Although Koneko had to live a tough life because of her Kuroka loves her greatly as she proved it when the Hero Faction attacked, and she took a hit for Koneko. Issei told Koneko that she is a good person, although a "naughty cat", and is willing to punish her if she does harm to Koneko. Koneko is thinking about re-establishing her relationship with her and thanks Issei for the courage he gave her.
In Volume 24, Koneko and Kuroka faced each other in the Azazel Cup and developed a sibling rivalry of who will get to become Issei’s bride and after Issei decided to make both of them his brides, Kuroka made a different bet of who gets to have the first night if either of them won. After Koneko defeats Kuroka, She became proud of her little sister’s strength and believed that she no longer needs to look after her which a tearful Koneko says she needs her because they are sisters, thus fully reconciled between the two sisters. Though they have reconciled, the sisters still tend to fight over Issei, albeit in a non-hostile manner, as Koneko constantly interferes with Kuroka attempting to commit perverted acts with Issei.
Clients[]
Morisawa[]
Morisawa is a regular client of Koneko's, he often requests of her to cosplay, re-enact notable scenes from his favourite anime series and play video games. Morisawa is shown to like Koneko due to his love for inhuman girls, in fact he even attempted to ask her out but was shot down when she revealed she was engaged to Issei.