Suzu Taniguchi/Relationships

Umeko
Umeko is Suzu's family caretaker and would watch over her while her parents were at work. She was the one that taught Suzu to always smile when she was lonely, but Suzu later realized that Umeko was telling her that if she wanted to understand others, she first needed to open up her heart to them.

Ryutarou Sakagami
Ryutarou is Suzu's boyfriend one year after she and the other students return to Japan. She is asked by him to return to Tortus to be an adventurer and spend their days together helping Kouki and the people, to which she accepts.

Kouki Amanogawa
Kouki is one of her friends from Japan and an fellow adventurer.

Kaori Shirasaki
Kaori is one of her closest friends. Suzu tends to act perverted around her, but will always stand by her.

Hajime Nagumo
It is unknown how she felt towards Hajime prior to his fall into the Abyss, but she was sympathetic for his supposed death as she hoped that he was still alive so Kaori could reunite with him.

In Volume 4, after reuniting with Hajime in the Great Orcus Labyrinth and seeing that he obtained monstrous powers, Suzu became shocked that the once weak Hajime now has completely changed and became ruthless against his enemies. She became terrified of him when he killed Cattleya without hesitation and threatened to kill them as well should they stand in his way. It's because of this newfound fear that she had no problems letting Kaori go to join him so as to not get on his bad side.

In Volume 6, Suzu became even more terrified of Hajime when he brutally killed Hiyama for his betrayal. However at the end of Volume 6, Suzu, Kouki, Shizuku and Ryutarou managed to convince Hajime to give them a second chance to join him to clear the remaining Great Labyrinths in order to destroy Ehit. This is out of the determination to become stronger and be able to see Eri again, and her wish to return her to their fellow classmates. In proper respect for Hajime, she addressed him as "Hajihaji". After Eri's betrayal and Hiyama's death, Suzu (as well as Ryutarou, Shizuku and Koukii) traveled with Hajime and his companions, while the rest of the students stayed behind to protect the Heiligh Kingdom

At the end of Volume 8, Hajime began to enhance his classmates armors and weapons, Suzu handed her bracelets to him to be enhanced until they were destroyed as a failure which saddened her greatly. To compensate Suzu, Hajime crafted for her one of his greatest masterpieces as a replacement: a pair of twin iron fans Artifacts which are significantly more powerful as a gift and she appreciated this very much. When she begged Hajime to give Eri a chance at redemption, Hajime obliged her pleas due to Kaori, but stated that he will kill Eri if the she doesn't redeem herself. Suzu was also shocked to learn that even Shizuku has fallen for Hajime as well and was amazed by Hajime's debonair charm to the point that she pondered on the possibility of falling in love with Hajime herself, though she snapped out of it by Ryutarou, and like him she readily gave Shizuku and Hajime her blessings.

When Hajime and Yue are creating the Crystal Key, Suzu was able to see Hajime's past memory of his fall in to the Abyss. She was horrified by seeing the suffering Hajime went through from first losing an arm and later also his right eye. Personally seeing him nearly die from blood loss and hunger, while hopelessly waiting for help that would never come, and eventually being driven to consume monsters which led to the hellish pain of his mutation that nearly killed him along with witnessing his unbreakable determination to survive and move on to conquer the Great Orcus Labyrinth alone in order to go home made her feel so much more pathetic compared to him. Because of this she gained much more sympathy, admiration, and respect for Hajime. This is reflected on the fact that the "Hero Party" had nearly died so many times in Tortus from considerably less dangerous situations even when they're together and aided by the Heiligh Kingdom's knights as well to the point that the only reason they only survived up until now and acquiring Ancient Magic themselves was because of Hajime continuing to rescue and help them. This realization also made her and Ryutarou silently admit to themselves that no matter what, they could never match what Hajime went through even if they fell into Abyss themselves for they lack his immense willpower.

After returning to Japan and Ehit's death, Suzu was the one who nicknamed Hajime as the "God Slaying Demon King" when she and all the other classmates appreciated him for his efforts of helping them to return back to Japan.

Inaba
Inaba was a kick rabbit that witnessed Hajime's battle with the claw bear in the Great Orcus Labyrinth, which was the lord of the floor that it resided in until Hajime killed him. After seeing Hajime's victory, it drank the same Ambrosia that transformed Hajime and decided to train to become stronger so he could see Hajime again. Later, Suzu found him on the 19th floor of the Great Orcus Labyrinth when she was looking for creatures to tame with metamorphosis magic. Inaba had recognized the equipment on her as of Hajime's design and subsequently allowed himself to be transformed by her. He later becomes her trusted companion and always fights alongside Suzu, always supporting her and he later helped Suzu fight Eri who possessed the powers of a Apostle, being able to overpower her with his kicking technique that was enhanced by Hajime's Artifacts.

Tio Klarus
Tio feels a sense of comradery with Suzu since they both have perverted qualities. Tio likes Suzu when helping mastering the "metamorphosis magic" and later become close friends.

Yue
Yue saved Suzu's life from Cattleya's army. After she was saved by Hajime Nagumo (who killed Daisuke Hiyama and drove off Eri Nakamura, Freid Bagwa and what's left of their army), Suzu addressed Yue as "Great Sister" due to Yue being older than Suzu despite of their appearance.

Eri Nakamura (Deceased)
Suzu sees Eri as her best friend and always will be. She was devastated by Eri's betrayal and it has an everlasting effect on her after Eri had revealed that she never considered Suzu as a true friend from the start and wanted to kill Suzu and the rest of their classmates due to her and the others being in the way of making Kouki hers. In order to talk with her again, she begs Hajime to help them complete a Labyrinth so she would be strong enough to do so. Suzu confronts Eri one more time but showed displeasure when Eri was transformed into an Apostle hybrid and as Ehit's servant. After Suzu fought and managed to defeat Eri, she begged Eri to find redemption but instead Eri used a self-destruction spell in attempt to kill Suzu but she died in the process, but not before telling her that if she would have met and befriend with Suzu before Kouki then things would’ve been different for her.

Ehit (Deceased)
Suzu once respected the so-called "God" Ehit. However, after learning the truth from Aiko and Princess Liliana, she lost all respect for him. She wanted to destroy Ehit and take back Eri. After Ehit transformed Eri into an Apostle hybrid, Suzu swore that she'll will make him pay.

Daisuke Hiyama (Deceased)
Just like Ryutarou, Suzu holds hatred towards Hiyama for bullying people in school including Hajime and his selfish lust for Kaori. When Hiyama temporarily murdered Kaori, her hatred towards Hiyama increased even more. Though she has shown to be fearful when Hajime brutally murdered Hiyama, however unlike Kouki, she hold no ill will towards Hajime for killing Hiyama as she will never forgive him for what he's done. After Hiyama's death following Eri's betrayal and Garland's defeat, Suzu learned from Hajime that what really happened in his "fall" was never an accident. Due to these revelations, Suzu lost what little trace of her sympathy and will always remember Daisuke Hiyama as a selfish, deluded traitor.