Okto/Relationships

Family
Ilia - As the Eigth Chapter of the Ilias Fragments, Okto is considered as a younger sister to Ilia. Although the two were separated for an unknown amount of time, the sisters would happily and cordially reunite within Dante's Gate. While Ilia can be exasperated by Okto's punctiliousness, the grimoires would agree to cooperate in rescuing their remaining family members within the Gate.

Mina Salem- The powerful being known as the Witch of Witches that wrote the 9 chapters of the Ilias Fragment, she is technically the "mother" of Okto and Ilia.

Others
Arata Kasuga - Prior to their initial encounter, Okto summoned a demonic army to confront Arata upon his arrival into Dante's Gate in order to evaluate her sister's master's strength. The two would then meet after he incompacitates the demons, although she was initially hesitant due to her actions. Nevertheless, Arata would quickly forgive Okto before requesting her opinion of his skills which Okto readily approves. Subsequently, the grimoire would also implore his assistance in rescuing her sisters which the Demon Lord Candidate would later agree.