Yui Kurata/Relationships

Royal Biblia Academy
Arata Kasuga - Yui first met Arata after she saved him from being destroyed by Akio's attack, pulling him to her dream world where she helped him discover his Thema. An early ally of Arata, the two of them easily get along with each other, even calling him big brother in their first meeting. Since then, they have become good friends despite only knowing each other for a short time. Yui falls in love with Arata, growing extremely attached to him after he helps save her from her Breakdown Phenomenon. As such, Yui greatly enjoys being with him, finding his open and straightforward personality amusing and fun. She is especially forthcoming to his perverted antics, often proposing risque comments or encouraging suggestive actions. On one occasion, she slept next to him along with Arin naked. As a result, Yui can usually feel frustrated and jealous whenever he interacts with other girls, with the exception of the Trinity Seven to a certain degree. After seeing his attention to Anastasia, she would become nervous and envious, promptly stating that she would do everything with him. Likewise, Arata greatly enjoys her company and affection, finding her cute and attractive. Additionally, in spite of her willingness, Arata does hold himself back on certain occasions. When offered the chance to kiss her, he refused and stated that that was something for when they were closer. Nevertheless, they both care very deeply for each other, happily willing to support and fight for one another.

Trinity Seven
Levi Kazama - Out of the Trinity Seven, Levi is Yui's closest friend due to the natures of their Themas. During her time in the dungeon, Yui was often visited by Levi who would keep her company and watch over her. When she started a Breakdown Phenomenon, the casual Levi would then become very determined to save her. She would even choose to fight against Akio, in order to stall Grimoire Security. The two of them normally get along very well as a result of their cheerful and nonchalant nature. In almost any situation, they are usually playing along with each other and enjoying the moment. They both care very deeply for one another, willing to fight and protect each other. After Levi was defeated by Lugh, Yui became determined to go fight herself, unwilling to let Levi shoulder the burden by herself. During battles, they are able to work together and support each other to overcome dangerous situations.

Arin Kannazuki : Yui and Arin view each other as good friends and reliable allies, despite their mutual interest in Arata. Nevertheless, the two care for each other and are willing to fight to protect one another. During Yui's Breakdown Phenomenon, Arin helped save Yui from the illusion dragon. Since then, they have gotten along very well, teasing and enjoying each other's company. Notably, they are often seen together with Arata, although they continue to remain friendly with each other. In particular, Yui has declared that she was fine being his mistress while Arin remained his wife. Likewise, Arin also stated that she was mostly fine with him being with the Trinity Seven. In battles, the two of have proven themselves to be a very strong and effective team. During the Magic Research Showdown against Arata and Lieselotte, Yui and Arin were able to greatly pressure them for the majority of the match and eventually defeat them when Yui helped Arin achieve the Trinity. Their teamwork has been described as specializing in defense.

Mira Yamana :She originally wanted to get rid of Yui for causing a breakdown phenomenon, as it is her job, but over time they have become friends.

Lieselotte Sherlock: They relationship is unknown.