Demon Realm
Mio Naruse[]
Mio is Wilbert's first daughter. In order to keep her safe from all the political problems in the demon, he has decided against raising her himself, but sent her to the human world instead. In an effort to ensure her safety, Wilbert transferred a portion of his powers to Mio.
Ashe[]
Despite being a human, Wilbert loved Ashe deeply and was saddened after her death.
Sheila[]
Wilbert had great trust and faith in Sheila, which soon developed into a relationship between the two of them. As a result, they both knew the feeling of losing someone close to them, which soon resulted in the birth of his second daughter, Maria Naruse.
Maria Naruse[]
Maria is Wilbert's second daughter. In order to keep her safe from becoming a political pawn in the demon realm, he hid her true parentage from her.
Sapphire[]
Sapphire is Wilbert's youngest sister who he cares a great deal about, along with having both a remarkable faith in both her abilities as a leader and combatant as he allowed her to lead his troops in the Great War.
Toujou Household
Jin Toujou[]
Despite being enemies, Wilbert developed faith and trust in Jin as both continued to talk with one another behind the scenes to establish peace between both the Heroes and Demons, even showing acceptance in Jin's feelings for his little sister.
Basara Toujou[]
Wilbert always tries to keep with his stoic demeanor, however, Basara sees right through it. After learning all of Wilbert's secret, Basara decides to keep himself about them. Despite agreeing to remain distant from each other, they remain in contact through proxies, such as Lars and Lucia. After learning that his two daughters not only tied the master-servant vow with Basara, but got pregnant as well, Wilbert had mixed emotions towards Basara. However, after taking some time to properly process everything, Wilbert gave his full blessing, and as reported by Lars appears to be much happier compared to how he used to be.