
Quick answer — the Kuricorder Quartet and Shione Yukawa performed 1 anime theme, including "Tameiki no Hashi" from Allison & Lillia.
the Kuricorder Quartet and Shione Yukawa performed the anime theme songs "Tameiki no Hashi" (Allison & Lillia).
the Kuricorder Quartet and Shione Yukawa's first listed anime theme is "Tameiki no Hashi", the opening of Allison & Lillia.