Completely at home

Izuku never thought his complicated soul mark would mean he had 4 soulmates, but he was so happy it did. Midoriya x Todoroki x Bakugou x Uraraka x y/n (original female character) In this universe, 80% of the worlds population has quirks, 29% are Omegas and 62% are Alphas. Everyone has a soulmate. Quirkless Betas, previously the vast majority of the population, are now a very rare occurrence. Quirks develop around age 4, the second gender is presented around age 10, and soul marks appear between age 15 and 18 depending on the proximity of the soul mate. Omega heats happen twice a year but suppressants are available and safe to use. Society encourages use of the full suppressants through the age of 18. Alpha ruts only occur when brought on by direct contact with an omega in full heat.