The Indigo League has the highest turnover of Champions. As it is a conjoined League between Kanto and Johto, it faces a higher number of challengers than singular ones, as well as attracting trainers from both the rest of the Japanese regions and overseas. Because the Indigo League was the first of its kind and remains the best in the world, triumphing over it offers unrivalled prestige. Likewise, Kanto and Johto are thought of as ‘the binary centre of battle innovation’, so many serious trainers would rather train in those regions over their own.