I, Akiyama Ryo, the Digimon Transmigration Emperor

Listen carefully. The person standing before you is Akiyama Ryo, holder of numerous titles: 'Digimon Emperor,' 'Exceptional Trainer,' 'D-1 Trainer,' 'Hero Trainer,' 'Wandering Trainer,' 'Legendary Trainer,' 'Strongest Trainer,' and many more. Akiyama Ryo is nicknamed the Digimon Transmigration Emperor. This is a story in which the author moves the beginning of Akiyama Ryo's tale a little earlier and tries to make a protagonist whose setup is way too overpowered feel less overpowered.