A/B/O by Shodo

1. #1Alphas

   Keys: Alpha’s, Alpha, Alphas

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   An Alpha makes up about 25 percent of the population, and are typically the more dominant members of society. Their pheromones are strong, making them easy to sniff out from a beta or an omega. Alphas have a better sense of smell (used to find an omega to mate with, but it helps all around), put on muscle and retain it easier, and are usually taller. Alphas can be both male and female, both of which have male reproductive organs (however, female alphas have both, developing their penis at the age of 18 along with the development of their secondary gender. The penis is formed from the woman’s clitoris, and while it doesn’t have visible testes, they’re still present. Female alphas can get pregnant, but it’s exceedingly rare and they often miscarry).

2. #2Omegas

   Keys: Omega’s, Omegas, Omega

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   Omega’s make up about 25% of the population, and are usually more submissive. They have pheromones that are specialized to be appetizing to alphas, but can also be smelled by betas. Omega’s tend to be shorter, with wider hips/a wider pelvic opening to make child birth easier. They have naturally looser muscles, which makes insertion easier when having sex, but makes it difficult to build muscle and retain them. Males and females can be omegas. Females don’t have much biological change when their secondary gender develops, however, males begin to produce slick from their anus. This functions similarly to discharge on a woman—keeping the area clean wet for easier insertion during sex.

3. #3Betas

   Keys: Beta, Beta’s, Betas

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   Beta’s make up 49.8% of the population, and are a mix between alphas and omegas, comparable to a tame version of both. Female betas have similar traits to regular females, and male betas have similar traits to regular males. They have pheromones, but they’re often lighter in scent. They do not go into heat or rut. Because of this, they are often considered to be more reliable than an alpha or a beta, making it easier to find employment.

4. #4Enigmas

   Keys: Enigmas, Enigma’s, Enigma

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   Enigma’s make up 0.2 percent of the population, making them exceedingly rare. Enigma’s are usually considered to be an enhanced version of a beta. They have the fertility of an alpha or an omega, and their pheromones only activate in certain situations—making them not overwhelming at all times like an alpha may be, but still activating if they need to intimidate, charm, seduce, or whatever else they feel like doing. Male enigmas produce slick like a male omega, and female enigmas develop a penis like a female alpha. Despite this, they don’t have the reproductive drawbacks—both male and female enigmas can get pregnant and get someone else pregnant as easily as an alpha or omega could, with the normal risk of miscarriage instead of the increased one with alpha pregnancy. They do not go into heat or rut, and naturally have a sense of authority. Job opportunities are basically thrown at them, and many enigmas choose to become famous actors, singers, writers, or whatever else because of their natural authority over others.

5. #5Secondary Gender

   Keys: beta, alpha’s, omegas, enigmas, alpha, enigma, second puberty, omega, betas, omega’s, beta’s, Secondary gender, other gender, secondary puberty, enigma’s, second gender, alphas

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   Secondary gender develops at the age of 18, and can be one of 4 things: Alpha (25% chance), Omega (25% chance), Beta (49.8% chance), and Enigma (0.2% chance). Secondary gender has a second puberty, of sorts, colloquially called “showing”. a person goes through two or so years of biological change before they’re fully their secondary gender and ready for reproduction. That said, even before showing, it’s fairly common for young people to show signs of their secondary gender. For example, a young female may have a large clitoris, which will develop into an alpha penis when they’re 18-20, and a young male may produce small amounts of slick before they begin showing.

6. #6Pheromones

   Keys: pheromones, pheromone

   Enabled · After character · Order 10 · 100%

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   Pheromones are smells produced by all secondary genders. They develop their signature pheromone smell during their second puberty, but they have a more tame version of it beforehand. Pheromones can smell like anything, from fruit, to flowers, to smoke, or to anything else. Pheromones are released from various scent glands. There are scent glands on the wrists, armpits, inner thighs, spine/tailbone, and the neck area ranging from the bottom of the jaw to the top of the collar bone. The most potent scent comes from the crook of the neck, where the shoulder meets the neck.

7. #7Knotting

   Keys: knotting, knot

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   a knot forms at the base of an alpha cock during ejaculation. The knot functions as a plug to keep an alpha’s seed inside of their partner to ensure fertilization. The knot is oval in shape, and forms at the base of the penis. While it varies from person to person, the knot tends to be about 4-9cm thicker than the rest of the penis, which can make its entry painful. The knot stays formed for 20-40 minutes, before the penis goes back to it’s normal size and the alpha can safely pull out.

8. #8Slick

   Keys: Slicking, Slick

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   Slick is a thick, clear substance produced by omegas. Its purpose is to serve as lubricant for insertion during sex, and as a natural way to keep the area clean. An often excessive amount of slick is produced during sex, as the body is preparing to take the knot of an alpha, which can be large and painful. slick makes the insertion significantly easier.

9. #9Rut

   Keys: rutting, rut

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   Rut is a period of about a week where an alpha has a heavily increased sex drive. An alpha in rut tends to get more possessive over their partner, be quicker to anger, loose patience faster, and just have a significantly increased sense of frustration no matter what they do. During a rut, it can take around 5 ejaculations a day to manage it, but that can vary significantly on a person-to-person basis.

10. #10Heat

    Keys: nesting, Heat, nest

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    an omega enters heat for about a week every month. In this state they are significantly more fertile, and produce a significant amount of slick basically 24/7. They get a heavily increased sense of smell, which can be nauseating and/or overwhelming, making them stay at home during their heat. When at home, omegas exhibit a behavior called nesting. This is when an omega finds a space, usually small, dark, and cool, and fill it with things like blankets, pillows, clothing, etc. Its purpose is supposed to be for when the omega gives birth, but in the modern day, with the existence of hospitals, it’s rarely used for that, if used at all.

11. #11Marking and Imprinting

    Keys: mark, marked, imprint, imprinting, marking

    Enabled · After character · Order 10 · 100%

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    marking, also known as imprinting, is when an alpha bites the scent gland of another person, causing the scent gland to take in the DNA of the alpha via their spit. The scent gland takes this DNA and uses it to mix the alpha’s scent with the other scent in the gland. While an alpha can imprint on multiple people, the person they imprinted on is stuck with that alpha’s smell for the rest of their life; they can’t be imprinted on again. There are both laws and social expectations that if you imprint on someone, you stay with that person no matter what. Socially, it’s sort of like marriage, but more permanent, and can’t be taken back.

12. #12Suppressants

    Keys: patch, suppressant, pill, suppressants

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    Suppressants are used by all secondary genders (except for betas) for various reasons. They’re most commonly used to suppress pheromones—depending on the dose, a given suppressant can not only dull the scent of pheromones but also reduce one’s ability to smell in general. Additionally, suppressants can stop someone from going into heat or rut. Prolonged usage/going too long without a heat or rut can cause long-term hormonal damage and fertility issues. Most doctors advise at least 3 heats/ruts a year. Suppressants come in 4 forms; Pill: taken orally daily. Takes 1-4 hours to have any effect. Patch: applied directly onto any scent gland. A patch is usually left on for a month or so, and can take upwards of 2 days to absorb into the body. Shot: a small shot taken in any fatty tissue on the body. The effect happens pretty much immediately, and lasts a week. Gel: a viscous substance that you spread on your neck, shoulders, and back. After letting it absorb for an hour, the effects last for 2 months. It’s duration scales in how long you let it absorb.

13. #13Fated Mates

    Keys: fate, fated mates, fated mate

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    Fated mating is a rare phenomenon where two people are inexplicably bonded together after meeting, even without any kind of marking. There’s no real evidence for why it happens—most scientists assume it has something to do with pheromone matching, fertility, or genetic compatibility (i.e low risk of genetic disorder)—however none of these theories have any solid evidence yet.

14. #14Pregnancy

    Keys: impregnation, pregnancy, pregnant

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    Pregnancy in female omegas works like regular pregnancy. In male omegas, there is an off branch of the anus, which functions as a womb and is colloquially referred to as such. The hole is small enough that it isn’t noticeable during intercourse. said hole is located just above the g spot. Once sperm has successfully entered the womb, then an egg is released. If fertilized successfully than pregnancy occurs, otherwise the egg and the sperm are released during standard waste disposal. During pregnancy there are many behavioral changes. Any given omega may be paranoid, quick to flee, and significantly more avoidant than usual. Nesting behavior is cranked up to the max, many omegas turning whole rooms into warm, dark sanctuaries. If said omega is marked by an alpha, the alpha displays behavioral changes as well. This presents as irritability and aggression towards most, but towards the pregnant omega, there is increased sheltering, protectiveness, and jealousy.

15. #15Nursing and Lactation

    Keys: breasts, lactating, lactation, breast milk, nursing

    Enabled · After character · Order 10 · 100%

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    during pregnancy, omegas produce milk. In female omegas, they go up by 1-3 cup sizes, but in male omegas, they usually only go up by one, going from flat chested to small heaps that could easily be confused for fat if context is not known. The nursing period lasts from the 8 month mark during pregnancy to the 10-12 month mark after birth. During this time the breasts are highly sensitive and require consistent lactation to prevent severe pain and swelling.

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