In the manga, Rena enters the contest by herself and wins both PCs, giving the Kite-type one to her brother.
There is controversy on whether or not the PCs are carbon copies of Kite and BlackRose or chibi versions of said PCs. It is never said that they are chibi versions, nor is it said that they are exact copies.
When compared to Kite and BlackRose, Shugo and Rena look significantly younger. Some fans say they look younger because of the art style, though characters like Balmung, Sanjuro, Wiseman, Kamui and other past characters appearing in Legend of the Twilight look almost the same as they did from their past media, more or less. Also, in .hack//frägment and .hack//Chat, the Shugo and Kite PCs are physically different from each other, but because these two medias are non-canon, the validity is questionable.
In flashbacks in the Legend of the Twilight manga, Kite appears to be almost exactly identical to Shugo, lending to the theory that they may be exact copies.