Beatrice/Relationships

Natsuki Subaru
In the beginning, Beatrice did not have a very good impression of Subaru, seeing him only as a nuisance especially after healing his wound upon his first arrival in Roswall's mansion. She has a tendency to speak to him in harsh tones, and remain apathetic towards his trivial banters and problems. Their relationship continues to strain mostly due to Beatrice's own stubbornness. However, Subaru would still treat her in a friendly and familiar manner, much to the former's annoyance.

Beatrice had shown signs and hints of not entirely detesting Subaru's presence. She is indifferent towards his circumstances and troubles. However, she still very much detests witnessing his suffering or pain. Such as that she refuses to kill him when asked to by Subaru himself. Throughout the entirety of her time bound within the Forbidden Library, she had shown to save Subaru's life multiple times out of her own volition such as removing his curse and guiding him to the hidden exit when Roswall's Mansion is set on fire.

After contracting with Subaru, her stance towards him changes greatly. She is shown to be much more open towards him and is constantly bashful towards his actions and remarks, which is usually having her head being pat or being complimented by him. She would also feel pleased and jovial from these actions. She herself strives to encourage Subaru and compliment him occasionally albeit reluctantly, which Subaru finds adorable.

Beatrice has also shown to be quite clingy towards Subaru, constantly seeking his attention, albeit unconsciously, which usually results in Subaru teasing her. Due to being together for an extensive period of time every day, Beatrice has adopted certain speaking habits from Subaru which were sometimes pointed out by other members of the party.

Puck
Puck and Beatrice have a very familial relationship, being that both of them having the same origin as creations of Echidna. Upon the current timeline, Beatrice would show Puck great intimacy and would always show fondness over him, going as far as cuddling and playing with him childishly. However, it is revealed that although Beatrice does have a strong relationship with Puck, most of these feelings stem from her 400 years of isolation prior to meeting Puck 10 years before the current timeline. She is also stated to be somewhat envious of Puck's position having finished his goal while she herself hasn't. Nevertheless, her feelings of being reunited with her kin and an old friend after four long centuries relieve Beatrice, and she very much adores Puck as he adores her.

Roswaal L Mathers
Both of them are acquainted with each other for more than 400 years, as they were both under Echidna's mentorship and protection. Before Echidna's demise, Beatrice formed a pact with her and vowed to protect the Forbidden Library located in Roswaal's Mansion. After Echidna's demise, Beatrice shut herself into the library, spending all of her time in there. Despite that, Roswaal still kept on visiting her, even after the original Roswaal A Mathers "died". Roswaal loves Beatrice and deeply cherishes her and the relationship they had. Although as expected she does not care about Roswaal, even saying:  "I never want to be his sister". The reason for her staying in the palace is because of the contract between them.

Echidna
Echidna was the one who ordered Beatrice to protect the Forbidden Library, also waiting for the one who would come one day, instead, that was barely her goal, her goal was to see who she'll choose to be ' That Person '. She was also deeply involved with Beatrice's birth.

Emilia
For better part of the early story until after Arc 4, Beatrice had avoided contact with Emilia as much as possible due to harboring a bit of jealously toward Puck for finally being able to get his wish. After the Sanctuary incident and a year passing they become quite close & strongly supportive of each other.