Older Neptune from Hyperdimension Neptunia. In a familiar-looking cave. What awaits her?

If you'd like to know what she's in for or just want some additional context, please take a gander at the associated chapter

https://www.deviantart.com/mrgagfoot/art/Off-The-Wall-Chapter-2-Neptune-797073055

Drawn by the fantastic Eudetenis!
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https://picarto.tv/eudetenis