It's been over a year since that first fateful night, when the reformed and rehabilitated Sombra was invited up to the bedroom of Shining Armor and his wife Cadance. And ever since that moment, Shining had become the official cuckold while the former Tyrant accustomed himself with the kinky Princess. Of course, it wasn't long before the boundaries were stretched far past their limits, and the three eventually removed all limitations between Sombra and his "Wife". Throughout that time, the relationship that formed among them became deeper behind closed doors. Even Shining, who was subjected to a more humiliating role in the bedroom as their "Private," was feeling content with himself underneath Sombra's domineering presence.

However, by the time a full year passed in his new status alongside the Royal Couple, Sombra was curious about testing Shining Armor's dilligence to their controversial relationship. Shining may have been the official Prince of the Crystal Empire, but his devotion to being cucked and under submission was something the Ex-Villain couldn't ignore. Sombra wasn't tempted to reclaim his Empire anymore, but that didn't mean he wasn't against having at least one pony under his thrall like he had before. And given how well Shining and Cadance had accepted their places alongside him, Sombra was hopeful he could make his Private into something more... dedicated to his rightful place.

Note: This story is a commissioned work that features very extreme themes and kinks (the main focus being Gelding), and I should emphasize that this is not a healthy example of cuckolding. This is purely a work of fantasy commissioned by someone else, just like Part Three was; furthermore, I should note that as the author of the original two stories, I personally consider Parts 3 & 4 of this series to be optional sequels. While they do fit in this story's universe, they don't have to be regarded as necessary additions to the series as a whole. Also, Reader Discretion is Strongly Advised.

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