Code Lyoko is a French animated television series created by Thomas Romain and Tania Palumbo and produced by the MoonScoop Group. They also have a Japanese dub called "コード・リョーコ" (romaji: Kōdo ryōko, Code Ryoko) and it also aired on Jetix, But sadly the Japanese dub can't be found anywhere.
Found Stuff
Code Lyoko Intro 1 in Japanese.
Code Lyoko Intro 2 In Japanese.
Code Lyoko Jetix Promo in Japanese.
Code Lyoko Episode 39 in Japanese
Code Lyoko Episode 40 in Japanese (partially?)
Code Lyoko Episode 41 in Japanese
Code Lyoko Episode 43 in Japanese
Code Lyoko Episode 44 in Japanese
Code Lyoko Episode 45 in Japanese
Code Lyoko Episode 46 in Japanese
Code Lyoko Episode 47 in Japanese
Code Lyoko Episode 48 in Japanese