Yūya Sakaki (manga)/Relationship

Yūto
Yūto is one of Yūya's closest friends. Yūya's cheerfulness and optimistic thinking sometimes clashes with Yūto's more serious disposition, especially due to the fact that Yūya's actions sometimes get them into trouble, leading Yūya to always be lectured by Yūto. When Dueling, Yūya sometimes even ignore Yūto's warning and advices due to his optimistic thinking, though most of times he listens and do as was advised to do. Yūto acts as a voice of reason and an older brother figure for Yūya. Yūto always scolds Yūya whenever he is doing something reckless or irresponsible and is very strict on lecturing him. When Yūya make a mistake, Yūto sometimes feels the need to correct it in his stead to the point of being stubborn. His way of scolding can even sound harsh, but he does so out of genuine concern for Yūya's well-being and safety. At certain moment, a praise from Yūya was enough to pacify his worry to a degree. Despite their differences, both nevertheless deeply cares and would look out for each other. Together with Yūri and Yūgo, Yūto will do anything to avoid making Yūya sad, even if it means erasing the past memories they have shared together.

Yūri
Yūri is one of Yūya's closest friends. Yūya cares for Yūri, which is shown when he shows concern for Yūri's condition after receiving tripled damage impact and then defended him from Sora. Yūya though, has a disagreement with Yūri's rough Dueling style, and Yūri in return thinks that Yūya is too soft. Yūri has shown a strong protective streaks towards Yūya. His protectiveness though, goes farther to the point he will disregard any reason and mercilessly beat up anyone who brings harm to Yūya in any way. When it comes about Yūya's safety, Yūri has no hesitation to put himself in harms' way and show clearly his anger and even uses rougher language as oppose to his usual politeness. He won't stop punishing his opponent even if Yūya himself asked him to stop. His protectiveness, however, doesn't stop Yūri from trusting Yūya's skill as a Duelist, which is shown during his Duel against Sora as he shows confidence that Yūya will win despite the damage he took. Together with Yūto and Yūgo, Yūri will do anything to avoid making Yūya sad, even if it means erasing the past memories they have shared together, and will remind either Yūgo or Yūto if he feels either of them want Yūya to remember them.

Yūgo
Yūgo is one of Yūya's three closest friends. Both have known and were very close with each other since childhood, Yūya was always cheering for Yūgo whenever he was Riding Dueling, and this becomes Yūgo's main encouragement whenever he is starting to lose his confidence. Like Yūto and Yūri, Yūgo is protective of Yūya, having swore to himself that he will always protect Yūya at all cost, which becomes his main motivation to keep on fighting. Together with Yūri and Yūto, Yūgo will do anything to avoid making Yūya sad, even if it means erasing the past memories they have shared together. He even cried for Yūya when he saw a fragment of Yūya's painful memory, immediately destroying the memory so Yūya doesn't need to go through with the pain again and stated that he will never forgive the one who made Yūya suffered. Yūya's concern for Yūgo is shown during his Duel against Ren, in which Yūya sensed Yūgo is in danger and subconsciously saved him by creating a road within his mind when he fell.

Yuzu Hīragi
Yuzu is Yūya's manager. The two has a rather unusual start; Yuzu wants Yūya to teach at her Duel school so she tricked him into signing the contract and forcefully make him to accept her as his manager, much to Yūya's own dismay. Their kind and friendly nature however, allows them to quickly get along quite well. Yūya would protect and save Yuzu when she is in danger, and Yuzu will assist Yūya in his quest regardless of the danger and shows genuine concern when he is injured. Like Yūto, Yuzu also scolds Yūya when she thinks he is being overly optimistic, but unfortunately, she usually has no choice but to go along with him.