>>56120310As the Japanese readers said, this would have worked if the MC had received a more mundane Pokemon Burst, a stage 1 for example, and as the hero's journey changed and improved along with its protagonist, leaving stage 3 for the final part of the series. story and a good ending would have been that in the end the Pokemon was released and finally MC and M-Pokemon met.
Another very wasted aspect is that it had the perfect excuse to create a lot of official fanservice of monster girls or action figures for kids, you could even repeat Pokemon, but change the design of the Burst depending on the user.
Also such an OP protagonist is typical of current isekais, but it doesn't work if you don't give him something that connects with the audience, the boy feels like your generic shonen MC, but with zero charisma.