joined birthday?

In this world when a person turns 18 a mark appears on their wrist to show their secondary gender. A ➰ for omega. A ✴ for alpha and a ❇ for beta. you also don't give off a scent till you turn 18.

Yuno and astas 18th birthday is coming up and since their birthday is the same day the black bulls decide to make it a joined party with the golden dawn. What happens when they discover their second gender?

Tbh i don't know im a 'go with the flow' writer but that's seemed to work for me so far 😂

Also sorry it only got four parts it came out shorter then i thought but hope you like it anyway. It still has fluff, angst and some smut so enjoy