Bilibili-sapphirefoxx -

Finally, the sapphire glow reached his hair. The short, brown strands lengthened rapidly, cascading over his—her—shoulders in rich, dark waves. Mark, now standing as a completely different person, stared into the mirror. The man from moments ago was gone. In his place stood a woman who looked as though she had stepped out of a high-end fashion magazine, her expression one of utter shock.

The heavy denim of his jeans felt coarse and suffocating. As his hips flared outward, the fabric strained before finally giving way, the denim magically softening and shortening into a pleated navy skirt. His heavy work boots felt like lead weights until they, too, succumbed to the light, shrinking and narrowing into a pair of sleek, black pumps.

Often involves a magical artifact (rings, mirrors, potions) or high-tech inventions.

SapphireFoxx specializes in "Gender Transformation" (TG) and "Body Swap" narratives. Because this content is often behind a subscription paywall on the official site, clips or fan-made montages frequently appear on Bilibili.

Here is a short story written in the spirit of a classic SapphireFoxx "transformation" sequence: