Twilight caught a grown-up Spike looking through her toy stash one night. She questioned him, and learns about a particularly interesting fact about male dragons: the slit which usually contains a male dragon's member can be used for penetration. With Spike intent on exploring his body, Twilight's curiosity got the best of her and she insisted on observing. What started as scientific curiosity around dragon biology quickly led to much... hotter feelings in her, as she gets roped in deeper by Spike's needy moans.

(More chapters to come, maybe, in the future)

Contains: bottom Spike, biting, pseudo-incest?

Cover image cropped from Prismrti's post on twitter.