Puzzle & Dragons X
People, Dragonoids, and Monsters inhabit a fantasy planet. The three races coexist in relative harmony. Drops, spherical things that emerge from the globe, can power up the Monsters. A Dragon Caller is a human or a dragonoid who can see the Drops, which make monster ties with humans. The globe is currently experiencing Drop Impacts, where a massive amount of Drops are formed in a single place (and can spread), affecting the lands and driving the Monsters insane. In actuality, Dragon Callers are tasked with settling Drop Impacts through regulating Drop distribution. En route to become a Dragon Caller like his father, Ace meets Rena, the daughter of King (another powerful Dragon Caller who goes missing at the start of the series). From there, he proceeds to Dragoza, a region where solely Dragonoids used to live but now has numerous Dragon Callers inhabiting there. As the series progresses, he gains companions like Charo and Tiger, as well as knowledge and skills. A blend of Dragonoids and Humans, the Ancients rule the six areas of Dragoza and oversee their development. One of the Dragonoid Callers, Lance, continually encounters Ace (though not as an opponent) and believes that the Dragonoids will save the world. A lot of the series is about figuring out why Drop Impacts happen and saving the earth. Meanwhile, at Dragoza, Dragonoids oppress Humans, believing that they are the only race that belongs there, the only one that can preserve the planet.