Who composed the song “Prism” by Yuki?

The song “Prism” by Yuki was composed by Andy Sturmer and Yuki.

Yuki

Prism

Andy Sturmer / Yuki

Namida no kawa o oyogi kitte
Tabi wa owari o tsuge
Hikari no oto ni michibikarete
Koko made kita kedo

Hiraita te no hira
Anata no kawari ni
Kanashimi o daite
Mihatenu sora no u

Anata wa ima mo shikame tsura de
Shiawase deshouka
Aishite kureru yasashii hito
Mitsukaru to ii ne
Hana saku oka made kuchibue o fuite kou
Ijiwaru na hito ga
Toyakaku iu keredo
Watashi wa, dokoka de machi ga etakashira?
Ima wa wakaranai
Kotae wa sora no ue

Mikazuki ga yurari tsuite kuru yo
Watashi o misukashite
Mita koto no nai basho eto mada
Aruite ikeru to omottanda
Watashi wa kono mama shinjite yukeru wa
Ai no tsuyosa yue yasashiki kemono yue
Hana saku oka made kuchibue fuite yukou
Yorokobi o daite
Mihatenu sora no ue

Saku no wa
Hikari no wa
Takanaru wa, mune no kodou