Michinari Okushiga functions as the romantic rival to protagonist Koujirou Tanne, competing directly for Yuka Ichinose's affections. His pursuit of Yuka consistently opposes Koujirou's own efforts to win her over, establishing an enduring conflict throughout the narrative. While Koujirou frequently balances his superhero duties with courting Yuka, Michinari remains focused on securing her affection for himself. Their rivalry generates comedic tension within the central love triangle through ongoing interactions.