Butterflyverse

Butterflyverse (バタフライバース) is a trope of Japanese origins, wherein regular humans are mixed with a minority made of Butterflies, Moths, Spiders, and Bees., October 2, 2021 (updated April 8, 2022)
==Basic elements==
The Butterflyverse is an eat-or-be-eaten setting with cannibalism and vore. In this universe, regular humans mingle with a minority made of Butterflies , Moths, Spiders, and Bees. Their number is so small that the majority of humans think of them as urban legends. They're born from mutations, so even if both parents are human, their child could be a Butterfly or Moth.
Generally, Butterflies and Moths realise their nature when they reach puberty, while Bees get to know about it early on. To survive, most of them sharpened their instincts and learned to distinguish prey and predators through smells and pheromones.
* Butterflies: make up the majority of the Butterflyverse but are the weakest, so they form groups to defend themselves. They're beautiful and what sets them apart from humans is that they're Spiders' main prey (their body and fluids taste delicious to Spiders and makes them want to eat more). Some Butterflies could live without ever realising they're not regular humans.
* Moths: same as Butterflies, but less numerous, and poisonous to Spiders (no antidote exists, so a Spider who eats a Moth will die).
* Spiders: less numerous than Moths, they're Butterflies' and Moths' predators. They don't need to eat them to survive, on the contrary, regular food is filling enough, but Butterflies have a special taste and sometimes Spiders feel the sudden urge to eat someone: this is often how they realise their own nature. Some prey on Butterflies because of reasons; others just can't control their instincts. A misunderstanding that often occurs is that Spiders prey on Butterflies so that Bees can find them, but in truth, some Spiders refuse to eat Butterflies exactly because they're afraid of being targeted by Bees. Spiders can get pregnant regardless of gender. Their births are more burdensome than normal births and Spiders often die; the mortality rate is even higher because they cannot be taken to an obstetrician. About half of the children born from Spiders are incomplete and do not hatch; the rest are 20% Bees, 10% Spiders, and 20% Butterflies. In the extremely rare occasion a Spider is expecting a Moth, both mother and child die because of poison.
* Bees: they're the minority group in Butterflyverse, but occupy the top of the food chain. Since it's hard to reproduce amongst themselves, they reproduce by laying their eggs in (i.e. impregnating) Spiders. They have a strong desire to reproduce, but will not attack Spiders when they don't feel the need. There are various ways to lay eggs, from light contact such as kissing to hard contact such as biting and sex, but the trigger is contact with mucous membranes. Bees enjoy laying eggs and are so quick at it that Spiders might not notice it immediately. The number of eggs laid at one time is 1 to several, and the fertilization rate is quite high at 80%. The laid eggs grow over a period of six months to a year and are excreted from the body through the anus. Bees' sap has an anaesthetic-like effect on Butterflies, Moths and Spiders, which allows Spiders to give themselves to Bees to carry their eggs. Bees can control Spiders that carry their offspring: Spiders still have a conscience, but their bodies can't refuse a Bee's order. Bees have the same appearance as regular humans, save for their glands that can produce eggs. They always know what's their true nature, contrary to Butterflies, Moths and Spiders who can live their whole life without realising they're different. Bees don't consider Butterflies and Moths as their prey, and they don't taste good either, but still hunt them to be eaten by Spiders who are carrying their eggs/children so that their eggs grow healthy.
==References==
Category:Glossary