Konjiki no Gash Bell!! EP25 - Apollo, The Free Traveler Part 2

Continuing where the last episode left off, Zatch and Kiyo are locked in a fierce Mamodo battle with Rops and Apollo, but Apollo seems to know how Kiyo thinks. This make Kiyo panic for a bit. Thankfully Zatch gets him back to his senses and they get in a shot. Zatch then asks what kind of king he wants to be. Rops simply holds up his scarf.

Apollo explains how he and Rops met. One day Apollo went into a country that was impossible to leave. Apollo gets directions out of the country with some kids. Rops was among those kids and when they were close, a gate blocked their way out. Apollo refused to give up though and that caused Rops' book to glow. Using his spell, Rops is able to get Apollo over the gate. The kids let Rops go with them and give him a scarf.

After the story, Apollo realized that Rops wanted to be a king of freedom. They use their strongest spell against Kiyo who countered with Baou Zakeruga. There's a massive explosion but Zatch and Kiyo are unable to move due to exhaustion. That evening Apollo and Rops leave to continue exploring the world.