Lieselotte Sherlock/Relationships

Family
Selina Sherlock : As the older sister of Selina, Lieselotte cares deeply for Selina. After Lieselotte's sudden disappearance, Selina would continuously worry about her, even hoping that Arata might be able to save her. However, in an unfortunate twist of events, the two would initially reunite as enemies. While delighted to see Selina again, this would not stop Lieselotte from stealing her sister's magic, as well as endangering her life in the process. Nevertheless, Selina would not hold a grudge against her, understanding the kind of person her sister was and still remained loving towards her, even if sometimes she was frightened by her sister's change. Remaining determined to bring her sister back, Selina requested she return after Arata defeated her, although Lieselotte would sadly decline. After Lieselotte became trapped in the motionless world, Selina would be sad, but determined to save her sister. Eventually, Selina would temporarily bring her sister back by using her body, happily working together to defeat Iscariot. Since then, the two have continued to remain close together, particularly after Lieselotte was saved by Arata.

Being the older sister, Lieselotte enjoys teasing her and is always watching out for Selina, willing to fight and protect her family. Notably, her actions were later strongly implied she actually intended to save her sister from the inevitable destruction of the world that Arata, along with herself and the Trinity Seven, would cause.

Royal Biblia Academy
Arata Kasuga: The last member of Trinity Seven to meet Arata, Lieselotte, prior to Arata's transfer to the Royal Bilbia Academy, was originally missing before reappearing as an evil mage. Even though the two were enemies, they initially acted very friendly with each other, due to their similar mischievous and nonchalant personalities. She, in particular, found him both interesting and amusing; although, she did not consider him a great threat. On the other hand, Arata also found her pleasant and considered her very attractive in spite of disagreeing with her willingness to steal her friend's magic. Regardless, Lieselotte would attempt to convince Arata to join her side; baiting him with information about Hijiri before stealing his magic. However, eventually, he would regain his magic and challenge her again. Even with her expert level magic and Magic King Candidate magic, as well as using her Last Crest, Lieselotte would lose in the end, causing her to remain trapped in the frozen world. Despite her actions, Arata would ask her to return with him, promising her that he would save her.

Since that moment, Lieselotte has become a dependable ally and friend, while having fallen in love with him. After temporarily returning due to her sister Selina, Lieselotte, when prompted by Hijiri to choose a side, would finally decide to be with her friends upon Arata's entrance. Later on, she would continue to support him, teaching him her Logos Art and saving him becoming Astral Trinity again during the Sky Library mission. Being on friendly terms, she greatly enjoys teasing him and often makes suggestive proposals which he happily relishes. Overall, Lieselotte and Arata have come to care very deeply for each other, fighting and trusting one another. Lieselotte especially is grateful for his acceptance and belief in her, as well as saving her from the static world. During Arata's last battle against Abyss Trinity, she would refuse to desert him and assist him in defeating Abyss. As a team, the both of them are able to work together effectively and dependably.

Notably, out of the Trinity Seven, Lieselotte has kissed Arata the most times. She can also become jealous whenever he shows attention with another girl.

Trinity Seven
Mira Yamana : Prior to disappearing, Lieselotte and Mira were also members of Grimoire Security as the first and second seat respectively. As her superior, Mira would work together with her to stop Breakdown Phenomenon's. In particular, Mira was the one who taught her to aim for her opponent's weakness. However, after reappearing as an evil mage, Lieselotte would fight against her former boss, who would barely avoid her magic negation. Despite being enemies, Lieselette would treat Mira in a friendly playful manner. While on the other hand, Mira would view her as an impure existence and vow to defeat her. But nevertheless, Mira would still continue to care about her former comrade. After Lieselotte became trapped in her frozen world, Mira ordered Selina to help Arata master the Logos Art in order to save her. Since Lieselotte's return, the two of them have remained on friendly terms.

Arin Kannazuki : Whenever when Lieselotte kiss or try to do something naughty with Arata, if Arin is there, Arin would have blushed. Arin, as the partner and "wife" of Arata had agreed that Trinity Seven but nobody else can share Arata because they're friends. Lieselotte had taken advantage of that statement. Arin does find Lieselotte's presence around Arata somewhat annoying since Arata is easily attracted to busty girls like Lieselotte but otherwise, Arin and Lieselotte have a good enough relationship.

Lilith Asami : Lieselotte addressed Lilith with the suffix -senpai to acknowledge that Lilith is quite superior to here in terms of power. Lilith usually blushes hard and protests when Lieselotte try to engage in naughty acts with Arata. When Lieselotte kissed Arata for the first time to steal his powers, Lilith had blushed very hard. Lilith and Lieselotte seem to get along well and does not cause each other trouble.

Levi Kazama,  Akio Fudo and Yui Kurata: She has a good relatenship with the three members.

Aries Chaldea : At first, their relationship is tense because the Biblia Academy considered Lieselotte who came from another world is a threat. But after the misunderstanding is corrected, Liese and Aries become more friendly, especially after she knows that Aries likes Arata from Beta Universe. Later upon Arata loses control and become a Demon King in β universe, Liese decides to deal with it by freezing time, and all her counterparts will be trapped in space-time for eternity. She informs Aries she doesn't want her getting involved, and Aries is also a Trinity Seven of Acedia Archive. Aries breaks in tears, and Liese apologizes for leaving her with such burden. Vowing to save her best friend, another young Aries decides to return Liese to her original world and fix the β World she was forced in, even though doing so Liese will forget who Aries is. The current Aries became an Arbitrator of heaven, and Liese says she will look for her no matter how long it takes.

Aries later sneaks into Royal Biblia Academy, which she later meets Liese. She however attacks Liese having a brief scuffle before introducing herself now as an Arbitrator, she then relieves Liese lost memories of her from β Universe, hugging her that she missed her, however just then her memories synchronized with Aries. Even now as an Arbitrator, Aries still considers Liese is still and only her best friend she ever met.