About Hotaru Yamaguchi
Hotaru Yamaguchi is a 48-year-old Japanese football manager. Across the 107 matches on record as a manager he has won 29.9% (32 wins, 21 draws and 54 defeats). He currently manages Japan U20, a post held since 2026. Earlier in his career he also managed Shonan Bellmare. His longest recorded stint is at Shonan Bellmare (2021–2026): 107 matches.