e621.net · 5848485

[i]Dr. Gyy's body has undergone superhuman flexibility biochemical modifications, resulting in a significant increase in the extensibility of various parts of the body. Among them, the flexibility of the spine is the most significant. Under immense force, her spine can even stretch to more than three times its usual length and bend in all directions without resistance.
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In order to maintain her flexibility, Dr. Gyy first inserts a huge pillar into her vagina during rest, then performs a super back curl to pull her chest out from between her legs, wraps her plump buttocks around her compressed waist like a towel, and finally lies on her soft labia with her head up, completely stuffing the pillar in with the back of her head.
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If the light is too strong, she will choose to lift her head slightly, insert her head into her vagina, and then continue to rest in this extreme position.[/i]