Future Card Buddyfight takes place in a more futuristic version of today. The card game connects to a parallel universe through special cards (Buddy Rare Cards) that act as portals. They bring monsters to Earth in order for them to become buddies with humans. Through friendship and courage, they take on and fight challenges, known as Buddyfights, where people of all ages have friendly non-hurtful competitions. The main character, Gaou Mikado has just started Buddyfighting. As the story progresses, Buddyfights are seeming to become a little too real...

[Source: MyAnimeList]

While Tasuku is off training and getting rest in the world of the monsters, the Buddy Police sees the need to deputize some of the champions to help protect the Earth. Gao, Tetsuya, and Zanya Kisaragi are among those deputized, and it's just in time. A new enemy arrives, Ikazuchi, with the deadly 100 demons, all rogue monsters. Now the new trainees and the Great 8 monsters must fight to protect Earth from being consumed by these new rogues.

[Source: Anime News Network]

The third season of Future Card Buddyfight.

Gao Mikado, a 6th year student of the Aibo Academy Elementary Division, is partnered with Dragon of the Sun, Bal Dragon, a monster born from a mysterious egg. To earn the coveted title as the strongest fighter in the world, Gao and Bal team up to challenge other fighters in the "World Buddy Cup". The two will have to battle others in a card game called Buddyfight, which allows monsters to fight alongside humans as buddies. Their rivals include ex-Buddy Police Tasuku Ryuenji, and the self-proclaimed strongest combination, Gaito Kurouzu and his buddy monster Black Death Dragon, Abygale.

Meanwhile, evil-doers are aiming to acquire Bal's special abilities. Kyoya Gaen, and his buddy monster Demonic Demise Dragon, Azi Dahaka are up to no good. Kyoya is already one of Japan's richest icons and is also rumored to be one of the strongest Buddyfighters in the world. What could they possibly be aiming for? And why are they seeking this "Ultimate Dragon Power”?

With the passionate shout of an impact call, let the power of the impact monsters be known! Now let's raise the flag!

[Source: Crunchyroll]

The ten parallel realms connected to Earth are known as Worlds. And at long last, the time to decide the World’s Number One has come!

Gao Mikado, a sixth-grader from Aibo Academy elementary division, has been chosen to represent Dragon World in the World Buddy Masters tournament. Guided by a messenger who claimed to be Saint Holy Sword Dragon, Gao went to Dragon World itself in search of his new Buddy! As if that was not an adventure enough, Gao interfered with the seal on an ancient shrine and released a forbidden monster! Known as the Demon Lord Dragon, Batzz, this forbidden monster had once devastated the continent of Dragon World. Batzz is a tyrannical monster which pays no heed to anyone. Yet, Gao believes he can become Buddies with even such a monster, and entered the tournament with him.

Ten representatives from ten Worlds.

One legendary Mirage Card that is bestowed to the winner.

An organization plotting for the legendary card, led by a man called Wisdom.

What will Gao, and his new buddy, Batzz get themselves into this time!?

[Source: Crunchyroll]