Kiyoshi Hara anchors the midfield for Kitahara Elementary's soccer team, the Kickers. As part of their core midfield unit, he contributes to the team's coordinated playstyle. His role involves executing strategic midfield operations during matches, including challenging encounters against opponents like the secondary school team Red Devils. Kiyoshi and the Kickers' midfield demonstrate adaptability in response to evolving team dynamics, navigating internal conflicts triggered by disruptive arrivals like the player Harry.

His presence is consistent during significant team events, including the kid championship where the Kickers progress through hard-fought victories. Kiyoshi functions within the ensemble framework, contributing to the team's collective narrative across all documented challenges and achievements throughout the seasons and official media extensions.