Tentacle on Futa Short Story, Feedback Needed

Story by Hapto

I always wished these images had a story attached, so I wrote one. :D Would love feedback before posting to rule 34 et al. Content is futa (obviously), tentacle-bondage, anal, frustration, forced orgasms, over-stimulation and edging.

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There's also two more images left in the series, so where would you want the story to go from here:

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