"Tenbin (Libra)" (天秤-Libra-, Balance -LIBRA-) is a song by Japanese pop singer Takanori Nishikawa featuring Asca.

It was used as the opening theme song for the anime White Cat Project: Zero Chronicle.

[2] On 27 January 2020, Colopl revealed that Takanori Nishikawa and Asca would perform "Tenbin (Libra)" (天秤-Libra-, Balance -LIBRA-) as opening theme song for the opening theme song for the anime White Cat Project: Zero Chronicle.

Sometimes scene show Takanori Nishikawa doing backflip and super jump with black effect.

Also, some scene show that Takanori Nishikawa hold fire with red effect, while ASCA hold fire with blue effect.