Quick answer — CHiCO with HoneyWorks performed 1 anime theme, including "HAIKYU!! TO THE TOP - Ending | Kessen Spirit" from HAIKYU!! TO THE TOP.
CHiCO with HoneyWorks performed the anime theme songs "HAIKYU!! TO THE TOP - Ending | Kessen Spirit" (HAIKYU!! TO THE TOP).
CHiCO with HoneyWorks's first listed anime theme is "HAIKYU!! TO THE TOP - Ending | Kessen Spirit", the ending of HAIKYU!! TO THE TOP.