Aiku is a former captain of the Japan U-20 national team, currently he plays for the Italian Ubers in the Neo Egoist League, he plays as a central defender. his whole team loves and respects him, Aiku is kind and sympathetic, but he is also rude to some. he will do everything to break through and become higher than others, showing his selfishness. his favorite, it's Snuffy, he's the coach of the Ubers team. He was also friends with Baro, Niko, Arya and Lorenzo.