Alright so I thought of this literally 5 seconds ago, how about Alpha Yakuza leader Bakugo who has a baby pup from a one-night stand.

He keeps the child, already enamoured with the soft ball that looks exactly like him.

The only problem is, he's an Alpha and all his men and women are Alphas or Betas, so what does he do?

He sends a group out to find the ideal Omega to raise his child with him, he's not planning on claiming the Omega, he just wants his pup to grow up healthy

and feel the love and care of an Omegan mother.

Few days passed and the group comes back with a green haired Omega who looks confused and scared but holds his head up high, green eyes sharp and cautious.

After a long conversation with the Omega, called Midoriya Izuku, they come to an agreement.

Izuku will stay to raise, love and take care of the pup as long as he can see his sick Mother and is payed for the hospital bills.

Cue long months living with Izuku and Bakugo starts to slowly feel connected with the Omega, every time Izuku is in the same room with him, Bakugo has the urge to grab Izuku and hold him close.

Every time Izuku has the pup, Bakugo feels his heart start beating a million hours per hour and his inner Alpha purrs at the fondness of the Omega.

"Claim Omega", inner Alpha chants, "Omega is good."

But Bakugo suppresses these feelings and ignores his inner Alpha, there's no way an Omega like Izuku would want to be claimed by an Alpha like him. His job is too dangerous and there are times where he's not home for months.

Until one night, Bakugo wakes up to the sweet smell of Omegan heat right above him.

"Izuku, what are you doing?" Bakugo asks with labored breath, the smell is so intense it's suffocating but he wants more.

"Please, claim me Alpha, I need you." Izuku pleads while grinding his wet heat on Bakugo's hardening length, the only thing keeping them separated is Bakugo's boxers since Izuku is already naked.

Bakugo cups Izuku's freckled cheeks that are flushed red

and asks with a stern voice.

"Do you really want me to claim you, Midoriya Izuku?" To which the Omega takes a deep breath and with sincerity replies "Yes, that's why I came to you."

After a night filled with many knots and loud love making, Izuku and Bakugo come out of the room with claim bites on their necks and live happily with their pup and upcoming pups.

Bakugo wouldn't have it any other way.