Ingvild Leviathan/Relationships

Issei Hyoudou
Ingvild first met Issei at the park, where the fountain and immediately recognized him as the Red Dragon Emperor. When Issei defeated the mysterious devils, he used his handkerchief to wipe off the blood from her face. When they meet again, Ingvild started to sing, which causes pain to his body but Yuuto and Xenovia from attacking her because he knows she meant no harm. When Ingvild woke up from her sleep, Issei took her to the beach and they started to become closer and eventually befriended each other, he was about to invite her to eat until they were interrupted by Nyx. Ingvild was contacted by Issei through Akeno’s breasts to ask her to sing for him, she was hesitant at first due to the pain she inflict on him, but agrees to his request to sing for him, which empowered Issei. After Nyx was defeated, Ingvild eventually became his first servant to join his peerage as his queen as he agrees to let her sing under his leadership.

In True Volume 2, Ingvild was among first group of brides in Issei’s that’s gonna marry him, hinting Ingvild will become one of Issei’s future brides.

Vali Lucifer
Vali took a personal an interest on Ingvild upon noticing the similarities between them. After Ingvild finished helping him move into his new apartment in Kuoh Town, Vali gave her his white dragon plushie as payment, which she took a liking to her new gift.

Lavinia Reni
Lavinia became Ingvild’s first client and took a liking to her and became happy after seeing that she summoned a cute girl. She asked Ingvild to help her move Vali’s packages to his new apartment for her first devil job.

Natsume Minagawa
Natsume immediately took a liking to Ingvild after seeing her as a cute girl and hopes to get along with her, which Ingvild also agrees as they shook hands with each other.

Nyx
Nyx has found Ingvild userful because of her ability to control dragons because of her Longinus Nereid Kyrie, so she placed a brainwashing technique on her to force her to sing in order to give pain to Issei.