Riho Sugiyama
Discography
| Date | Catalog | Name | Roles |
| 2021-04-21 | COCC-17869 | Cobalt no Kodou / Nanaka Suwaコバルトの鼓動 / 諏訪ななかCobalt no Kodou / Nanaka Suwa |
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| 2021-04-21 | COZC-1739~40 | Cobalt no Kodou / Nanaka Suwa [Limited Edition]コバルトの鼓動 / 諏訪ななか [初回限定盤]Cobalt no Kodou / Nanaka Suwa [Limited Edition] |
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