King Leo
One year ago, King Leo had made and held the Battle of the Beast God tournament in order to see who was worthy enough to challenge and fight against him from within their own given time and opportunity. Nine fighters had entered the tournament upon sight and that each of them had battled against one another from within a strong and relentless manner, but in the end, Sho Hayate had proven to be the strongest warrior and that he had won the tournament while defeating both King Leo and his fake impersonator King Lion from within the finals of the competition. To seek revenge against Hayate and those who caused his humiliating downfall, King Leo has organized a second version of the Battle of the Beast God tournament, but this time, there's a new rule: teams of two people must work together from within this new tournament so that they can either ensure victory or face defeat. The competitors from last year's tournament have learned of King Leo's new tournament and that each of them have decided to join forces with each other on either friendly or temporary terms. With the exception of Carol Stanzack (who decides to skip the tournament in order to continue her gymnastics training) and Nicola Zaza (who's too busy in having to work on his latest scientific project), Hayate and the fighters from the previous tournament have returned for combat and that they're ready to face the latest challenge that's presented to them by King Leo. However, the previous fighters aren't the only ones from within this tournament, as two new challengers have entered into the fray as well and that they have their own reasons in participating from within King Leo's new competition. The gathered fighters must be ready and prepared to not only fight against each other and King Leo from within this tournament, but also, they must deal with an unknown threat that lies directly from within the shadows of this competition as well.