Seiya Inoue is a centre-back from Hyogo Prefecture. He played for Konan University and joined Avispa Fukuoka, where he gained J1 League, cup and league cup experience. Inoue also spent time on loan at Tokushima Vortis in 2025 before moving on loan to Mito HollyHock in 2026. Standing 1.87 metres, he has been used as a central defender and brings physical presence and experience from multiple J.League competitions.