Ok, so I've always wanted to try my hand at a wolf au, so here's my attempt.  I kind of borrowed the rules of the universe from a bunch of other fics I've read, so I'll paste them down below.   Also, in case anyone is wondering the pairs in this story are Namjoon (alpha) x Seokjin (omega), Yoongi (alpha) x Taehyung (omega), Jungkook (alpha) x Jimin (omega), and Hoseok (alpha) x OC (omega).

~A Few Notes on Wolf Hybrids~

• Most wolves live in more rural areas in packs, however, some live in cities with their family packs.
• Wolves have mostly equal rights under the law, however, it's still legal to fire or not hire people because they're hybrids.  Also, not many doctors know how to treat wolves, so they rely mostly on healers, who have been taught for generations (Seokjin is Bangtan's healer).
• There is still a lot of discrimination against hybrids in society.
• Alphas present at age 14-16 when they go into their first rut.
• Omegas present later, between 18 and 20, when their pheromones change.  They go into heat anywhere after then, but almost always before the age of 21.
• Most wolves find their mate before 25, and it's seen as not good to not have found them by then because the chances of something bad having happened to them is greater.
• Wolves go into heat about once every four months, but during the first year, it can be more.  By the second year, heats will even out and fall into a pattern.
• Male omegas can only get pregnant while in wolf form during a heat, however, female omegas can get pregnant via unprotected , though it's not as common as in humans. 
• Since hybrids are dying out, it's an unofficial “law” among wolves that omegas must try to conceive at least one time during a heat.
• “Mating” can only be done during a heat when having as wolves.  When the alpha bites the omega on the shoulder, the bond is sealed.  The bonding mark never fades, and the mark will always be there as a scar.
• Omegas can have anywhere between one and five kids during a pregnancy, but any more than two or three is very uncommon and very dangerous to both the omega and the pups.
• Wolves tend to have better immune systems, sharper senses and are less sensitive to things like heat and cold.
• Alphas do have the power to “command” other wolves, but it's hard to do to other alphas, and an omega's mate and/or pack alpha can usually reverse it.  It's also seen as very barbaric to command another wolf.