Quick answer — Alisa Takigawa performed 1 anime theme, including "Iroasenai Hitomi" from The Seven Deadly Sins: Signs of A Holy War.
Alisa Takigawa performed the anime theme songs "Iroasenai Hitomi" (The Seven Deadly Sins: Signs of A Holy War).
Alisa Takigawa's first listed anime theme is "Iroasenai Hitomi", the ending of The Seven Deadly Sins: Signs of A Holy War.