History Fridge / MadeInAbyss

* Irumyuui wished on the Cradle of Desire to cure her infertility, but ended up giving birth to many babies that were stillborn or died shortly after birth. She wished to become fertile, but being able to conceive a child and being able to give birth safely are two different things, and in real life, a young girl's body is sometimes ready for the former long before it's ready for the latter. Some girls start getting their periods around 8 or 9, and Irumyuui might not even have been that old at the time she made her wish...

* Irumyuui wished on the Cradle of Desire to cure her infertility, but ended up giving birth to many babies that were stillborn or died shortly after birth. She wished to become fertile, but being capable of conceiving a child and being able to give birth safely are two different things, and in real life, a young girl's body is sometimes ready for the former long before it's ready for the latter. Some girls start getting their periods around 8 or 9, and Irumyuui might not even have been that old at the time she made her wish...

* Irumyuui wished on the Cradle of Desire to cure her infertility, but ended up giving birth to many babies that were stillborn or died shortly after birth. She wished to become fertile, but being capable of conceiving a child and being able to give birth safely are two different things, and in real life, a young girl's body is technically ready for the former long before it's ready for the latter. Some girls start getting their periods around 8 or 9, and Irumyuui might not even have been that old at the time she made her wish...

* Irumyuui wished on the Cradle of Desire to cure her infertility, but ended up giving birth to many babies that were stillborn or died shortly after birth. She wished to become fertile, but being capable of conceiving a child and being able to give birth safely are two different things, and in real life, a young girl's body is technically ready for the former long before it's ready for the latter. Some girls get their periods around 8 or 9, and Irumyuui might not even have been that old at the time she made her wish...

* Irumyuui wished on the Cradle of Desire to cure her infertility, but ended up giving birth to many babies that were stillborn or died shortly after birth. She wished to become fertile, but being capable of conceiving a child and being able to give birth safely are two different things. In real life, many young girls get their periods early, some as 8 or 9 (the youngest recorded mother in history was 5)--it doesn't mean their bodies are fully ready to give birth. And Irumyuui might not even have been that old at the time she made her wish...

* Irumyuui wished on the Cradle of Desire to cure her infertility, but ended up giving birth to many babies that were stillborn or died shortly after birth. She wished to become fertile, but being capable of conceiving a child and being able to give birth safely are two different things. In real life, many young girls get their periods early, some as 8 or 9--it doesn't mean their bodies are fully ready to give birth.

* As [[WebVideo/MothersBasement Geoff Thew]] pointed out in his video, the Hammerbeaks, a species of bird common to the Abyss throughout the first few layers, seem like something out of a videogame. Their meat is succulent and provides a plethora of nutrients. Their feathers happen to be ideally flammable to serve as kindling wherever one might be. And their signature beaks, along with their claws, can strike sparks easily as a substitute for flint and steel. Why is this Fridge Horror? Because it seems awfully convenient for a species with such evolutionary adaptations that not only don't benefit it, but work against its survival, to not only flourish inside of the deadly reaches of the Abyss, but thrive in enough numbers for adventurers to make use of them regularly. The question then arises...if a species that exists to ensure, not its own continued existence, but the continued existence of others...how did such a species come to pass? Did some early adventurer create them artificially to help other adventurers? Did they rapidly evolve from something else to form a twisted mutualistic bond with adventurers? Or...did the Abyss create such a species to help those it calls into its depths reach further down by supplementing their own gear with a local source of materiel?

** The White Whistles themselves are also a special kind of horrifying, because of the state that these souls have to exist in to help their wielders. While Doni was Lyza's whistle origin, and Prushka became Riko's, Bondrewd managed to ''remove and clone his own soul and turn his very body into his own White Whistle,'' and then these souls can have special interactions with their wielders if Riko isn't just unique. They also have to seemingly sacrifice every single possible thing they're willing to ever have again as a "prayer" to the wielder they'll become bonded to, which could be matters of absolute trust -- or potentially abused, if Bondrewd praying to himself is anything to go by. Mankind straight up weaponized and compartmentalized their very ''essence of being'' to continue adapting and thriving within impossibly dangerous environments that they were never meant to tread, and there's a strong chance some of these sacrifices were not a proper consent.

* Mitty is somehow ''perfectly cloned in body and soul'', aside from regaining her missing eye, via the Iruburu Balancing, where giving something of value to the village itself manages to produce currency or new items as a result. Over half of Belaf's body was apparently enough value to bring back Mitty. The Abyss doesn't just have a Curse, or BodyHorror artifacts and strange mutant wildlife; it can distort the very laws of reality and effectively produce sacrificial magic from the countless dead child souls inhabiting Iruburu that can even ''bring the dead back'' at a great cost. [[FromBadToWorse And this is just a taste of what's to come.]]