Pokémon Gotta Catch 'em All!

From the introduction:

It’s a strange new world Jumper you find yourself in, or perhaps one achingly familiar? A world where humans and monsters live in relative harmony, and ten-year olds set off from their homes with dreams of grandeur. Where every year, youths gather to make a name for themselves with their teams across combat tournaments and dazzling performances, each seeking to reach the top of their field. A place where the relics of the past may terrorize the present and criminal masterminds plot actions that may change the world. However, despite all that, this is a bright world filled with laughter and joy; and also, incredibly silly at times.