Post-Nightcore is a movement stemming from the infamous Nightcore genre. Post-nightcore (or Nightcore Revival as it is also called) is an attempt to expand the horizons of regular nightcore by adding more experimental qualities to the mixes as well as speeding up songs that normally would not be suitable for a typical nightcore aesthetic. Post-nightcore releases will often take on a Plunderphonics-type approach to modifying their music while also maintaining the cheery and light-hearted aesthetic of the original nightcore genre, or intentionally subverting it. Sound Collage is often utilized as well. Some post-nightcore releases also take the additional breaks and other bells and whistles traditional nightcore DJs would add and exacerbate their effects, often times soaking songs in a sea of reverb or overblowing bass frequencies alongside the random speeding up of the source material mid-song. Humor is often implemented in these remixes, choosing previously-memed material or distorting the source material. Additionally, aesthetics from genres inundated with (often crass or crude) anime aesthetics aside from nightcore like Lolicore are commonly used for a shock factor by edgier artists along the post-nightcore spectrum.

Post-nightcore as we understand it today originates on platforms like Bandcamp as the original NXC scenes were dying out. Artists like Arashi-bu pioneered the sound with harsh samples. This would set the stage for Plastic Neesound and Johnny and the Night Cores, among others to create hyper-stretched and distorted songs which acted similarly to how modern plunderphonics on bandcamp was at the time. The 7Form labels eventually picked up on the trend, and several of its members started creating music under The Media Men and other aliases, alongside partner label Černobog which specialized in such mayhem. Eventually, Favorite 水 would go on and pick it up and made Post-Nightcore Is Dead?, which remains one of the most popular instances of post-nightcore to date. Patricia Taxxon, already a plunderphonics artist, took the formulas of the genre and added her own twists onto it with Majesty, which gave fresh new eyes to the scene as well. As time has went on, artists have continued to make post-nightcore releases, with genres like HexD being thrown into the mix as well in the late 10s.

It is worth noting that while post-nightcore is a "movement" or "scene" in a loose sense, a good majority of the artists are rather isolated from each other. It could be said that a good majority of the artists don't interact at all, and really only connect to make post-nightcore if at all. A common attribute among them, though, is the propensity of them to be online teenagers and interested, generally, in contemporary music (often utilizing social media and sites like Sonemic to express such interest.)