Guang Hong Ji is a 17-year-old Chinese figure skater.

He is initially seen as shy and innocent, as shown when he expressed discomfort at Victor's stripping, but his free-skate program revealed a more "intense" aspect of his personality. Guang Hong enjoys using SNS immensely, and he looks up to Victor Nikiforov.

(Source: Yuri!!! On Ice Wikia)

Yuri Katsuki makes his way to the Grand Prix ice skating competition as Japan’s top representative with his eyes on the prize. However, instead of celebrating, Yuri walks away defeated and ready to retire for good. But a run-in with champion Viktor Nikiforov and rising star Yuri Plisetsky ignites a new fire within him. With the two of them close by his side, Yuri will take to the ice once more.<br><br>

(Source: Funimation)

A side story manga was published as a bonus item included with the final Blu-Ray volume of the anime series, and follows Yuri Plisetsky and Otabek Altin the night after the Grand Prix Final.