Yūya Sakaki/Relationship

Yūshō Sakaki
Yūya admired his dad for his Entertainment Duels and the way he performed. Not exactly much is known about their family relationship. But his father thought many things that Yūya uses to this such as looking forward.

Yōko Sakaki
Yūya's relationship with his mother is quite difficult to understand sometimes. Sometimes, his mother tells other (characters) about Yūya and his father, being serious and nice about his son. At home, she usually has a typical mother-son relationship. After Sora Shiun'in start coming to their home, Yūya was being sold out for Sora even though Yūya is her son and yet she takes care of Sora more.

Yuzu Hīragi
Yūya and Yuzu are childhood friends. Their relationship is that of regular friends in many anime. Yūya can be bad towards at Yuzu at times and Yuzu usually gets pissed about it. Though, it could be hinted they could have a romance relationship as they knew each other for a long time and get blushes at times such as when Yuzu didn't realize she was hugging Yūya.

Noburo Gongenzaka
Yuya and Gongenzaka have been friends since they were kids and share a very close bond. After his father disappeared Noburo always defended Yuya from bullies and is very protective of Yuya. But Noburo would at times get annyoed if Yuya doesn't take things seriously but they are shown to be very supportive and friendly to each other.

Futhosi,Tatsuya and Ayu
Yuya acts as a older brother figure to the three of them and they admire Yuya  and his dueling skills alot. They are very supportive to Yuya. In return, Yuya is also very supportive to them and cares about their well being.

Shūzō Hīragi
Yūya respects him. Shūzō could be too hot-blooded at times, giving Yūya bad/weird impressions. Shūzō helped Yūya come back to his usual self when he was shocked by the fact there is someone besides himself that can Pendulum Summon.

Yūto
Yūya and Yūto both have met only for a short period of time, but Yuto immediately developed a trust in Yuya in which Yuya believe dueling is not a tool for fighting and supposed to be used to make people smile; something which Yuto truely wishes for. Yuto also saved Yuya from Yugo's attack and entrusted him with his Dark Rebellion XYZ dragon telling him to duel to bring smiles on the audience's face.

Reiji Akaba
Although there hasn't been much interaction between Reiji and Yuya, Reiji seems to really takes an interest in Yuya and his abilites and also respects his father. During there first meeting and duel Yuya called Reiji an amazing duelist and was also interested in Reiji's abilites. Despite the fact that there is not much interaction between both of them, it is stated that Reiji is one of Yuya's rivals.Reiji doesn't show any open dislike to him and he  seems to hold a respect on Yuya as it is seen in episode 18 when Mr. Sawatari accused Yuya for being culprit Reiji fiercly defended him saying Yuya is no criminal.