Yūri/Relationship

Reo Akaba
Yūri appears to be like Sora Shiun'in, an elite Duelist, and because of this, Reo Akaba gave Yūri the mission to capture Yuzu Hīragi and bring her to him saying that she may be the fourth piece he needs. Yūri later states he follows all his orders that are given to him by the Professor and that he would get scolded if he turned Yuzu into a card before offering Yuzu to come with him.

Yuzu Hīragi
Yuzu is Yūri's current target having captured both Ruri Kurosaki and Rin. He is then given a mission to capture Yuzu. Like all his other counterparts Yuzu mistakes him for Yūya Sakaki and then thinks he must be Yūgo. Yuzu then states horror as he turned 2 people to cards with little remorse and asks why he did it. He states it was because they bugged him and he threatened if she bugged him that, he would do the same to her, but he wouldn't or the Professor would scold him. Yūri then explains how he is only following the Professor's orders. Yūri offered her to come with him but she refused him then. They then begin to Duel, and Yuzu runs away saying she is no match for him showing she is slightly afraid and Yūri praises her for being able to make sure she wouldn't get captured for so long, he then disappears.

Ruri Kurosaki
Yūri has stated he is the one whom had captured Ruri Kurosaki.

Rin
Yūri has stated he is the one had whom captured Rin.

Dennis Macfield
Yūri and Dennis obviously know each other, as Dennis stated Yūri's name when he appeared in front of him and is clearly not surprised. Yūri then displays confusion as the Professor only ordered him to capture Yuzu. Dennis then proceeds to tell Yuri that Yuzu and Serena swapped clothes to avoid detection. He also gives him the information concerning Yūya, stating Yūya looked like him. Dennis showed concern when Yūri steped up to face Halil and Olga. It is unknown if this concern is for Yūri or for them. Later, Dennis took Yūya and Noboru Gongenzaka to the Iceberg Area, where they saw Yuzu wasn't there. Dennis was sure Yūri had done his work, showing he is confident in Yūri's skills. Later, when Reiji said Yuzu wasn't turned into a card, Dennis showed concern for Yūri thinking Reiji had seen him capture her.

Obelisk Force
Yūri seems to think of the Obelisk Force as ex-spendable, threatening to turn them to cards if they didn't leave.