Zenonzard The Animation (OVA)

The ZenoZard anime series takes place in the year 20XX. High school student Souta Azuma is unexpectedly teamed up with Eilietta Lash, an ultra-high-performance AI known as a Codeman, to participate in the card battle game ZenoZard's world championships, THE ZENON. Their first opponent is Shion Saionji, a well-known player who attends Souta's school, along with her partner Ash Claude.