Future Card Buddyfight Episode 4: The Rules of Buddyfight!
Episode 4 of 64 of Future Card Buddyfight, aired January 25, 2014, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Gao’s new friend, Kiri, learns about Buddyfighting, and takes part in an electrifying training session. Drum forgives Gao and helps him out of a tricky situation. The mysterious Buddyfighter Rouga reveals a dark power that may change Buddyfighting forever. Source: crunchyroll