Asuto Inamori hails from Inakunijima Island, where he played for the local soccer club until sponsorship loss forced its disbandment. His mother’s subsequent passing revealed through a letter that his father—a professional soccer player—was alive, contrary to the accident narrative meant to shield Asuto from resentment toward his father or the sport. Relocating to Inazuma Town with teammates, he joined Raimon Junior High’s team as Inakuni Raimon to compete in the Football Frontier tournament and secure sponsorship.

Naturally upbeat and passionate about soccer, Asuto initially viewed the sport purely as fun but grew to respect diverse motivations while demanding fair play. He avoids dictating his views, opting for private discussions to help others find resolutions—evidenced with Haizaki Ryouhei and Ichihoshi Mitsuru—and inspires teammates and rivals alike with his optimism.

As a forward for Inakuni Raimon, he mastered combination hissatsu like Hokkyoku Guma 2gou with Kozoumaru Sasuke and Norika Umihara, and Counter Drive with Kozoumaru. His solo techniques included the dribbling move Inabikari Dash and shot Shining Bird. Key plays featured scoring the winning goal against Minodouzan using Hiura Kirina’s Koori no Ya pass, deploying Inabikari Dash to evade Kazemaru Ichirouta versus Teikoku Gakuen, and executing a goal-saving slide tackle against Sakuma Jirou.

Transitioning to midfielder for Inazuma Japan (jersey #8), he contributed one-fourth of the power to the combination hissatsu Last Resort Σ alongside Haizaki, Nosaka Yuuma, and Hikaru Ichijouraj. Facing hypnotic tactics and violent opponents, he shielded Ichihoshi from distrustful teammates and denounced hatred-fueled play, vowing to "protect soccer itself" over team interests.

His growth centered on balancing personal ideals with soccer’s complexities—accepting varied motivations while upholding fairness—and cementing his resolve to safeguard the sport’s essence, declaring: "I could never betray what I love, no matter what happens."