Yuka Sonobe/Relationships

Yuri and Hiroyuki Sonobe
They are Yuka's parents.

Nana Miyazaki and Taeko Sugawara
They are Yuka's closest friends.

Aiko Hatayama
Yuka is overprotective of Aiko.

Hajime Nagumo
Yuka was grateful to Hajime for saving her in the Great Orcus Labyrinth and wishes to pay him back. When she meets him again in Ur, she was surprised for his survival but was saddened by how much he has changed. She further became shocked by how powerful he had become and how he had two beautiful girls with him who are in love with him. Despite this, she still took the time to thank him for saving her and vowed to him she wouldn't waste it. Hajime also gave her words of comfort that helped her with her trauma. She is terrified a little bit of Hajime when he murdered Hiyama. She is shown to have a crush on him as time passes. After returning to Japan, the two of them get along with each other to the point where all of their classmates call her his 'Mistress' (though both deny any romantic involvement between each other). Yuka also developed certain habits when returning to Japan such as fiddling with her scarf and tapping her foot on the ground and would only do it whenever Hajime was around.

She was also shown to be distraught whenever Hajime claims that there won't be a chance for the two to get together.

Emily Grant
Emily greatly respects Yuka after seeing her calm down rowdy members of the Haulia Tribe after they came to Japan.

Tio Klarus
Yuka shares everyone's opinions of Tio being a pervert.

Ehit (Deceased)
Ehit summoned her and her classmates as pawns. After learning the truth from Aiko and Princess Liliana, Yuka discarded all of her respects for him.

Daisuke Hiyama (Deceased)
Her former classmate who is a traitor. Yuka show a slightest fear when witnessing Hajime murdered Hiyama for his betrayal. Unlike Kouki, she doesn't condemned Hajime for this murder.

Eri Nakamura (Deceased)
Her former classmate who is also a traitor that wanted to kill her and the rest of the classmates due to her and the others being in her way make Kouki her boyfriend.

Yukitoshi Shimizu (Deceased)
Her former classmate and teammate who is also a traitor due to him wanted to kill Aiko and become a "hero" for Garland.

Simon Levellair
Yuka first saves Simon from being mobbed by the citizens of the Heiligh Kingdom. She was grateful to him that he will listen to her dilemma with regards on how she is moving forward with her life and offered her words of encouragement.