Shoyo
Akaashi honestly wished that he stayed a few extra days with his mother. At least she didn't have an energetic 1 year old who just learned how to use his limbs.
Shoyo had bright red hair, which came from Akaashi's part of the family. His great grandfather had the same mop, and Kuroo often joked that if they didn't know where his hair came from he'd have thought that Shoyo was someone elses'. Kuroo usually just got a smack to the head by either Iwaizumi or Tsukishima.
He loved Shoyo, he did, but the baby was full of energy and Akaashi was not ready for it. Keiji hoped that Shoyo would get Akaashi's calm head and not Bokuto's generically excited nature. But of course the universe had to screw him over and the tiny omega had taken after his father.
Speaking of said father, Bokuto had continued his volleyball dream and had started working with the big leagues. Something that wasn't hard considering the fact that he was already one of the most famous aces in the Japan. And now that they had Shoyo, Koutarou worked even harder.
That, and Keiji was absolutely weak for the both of them. Only three weeks ago did Shoyo break one of his expensive antique vases, and instead of scolding Shoyo for breaking it, and scolding Koutarou for letting it happen, he just sighed and told Bokuto to clean it up while he made sure Shoyo didn't scratch himself.
Tsukishima had the audacity to say that he was 'going soft' but that really wasn't the case and the look Oikawa gave him showed it all. No, it wasn't that Akaashi was going soft, it was the fact that he had two sets of puppy dog eyes to deal with. At least when Keiji and Koutarou were dating, he'd grown immune to the trick and smacked his husband down when he needed it.
But when Shoyo came into the picture, Keiji was weak.
The redhead was smaller than most babies, not because he was an omega, but mainly because there were some difficulties during Akaashi's pregnancy (one of the main reasons Koutarou didn't want any more kids), and had to have extra attention to make sure he grew up healthy. So he couldn't describe how relived he was when Shoyo got more active as the days went.
Unfortunately, he was the kind of active Akaashi was used to from Bokuto. He hated the fact that there were two of them now.
And when he came back home, he didn't only see three of his best rugs absolutely demolished, but his angel running around the house in only his diaper and Koutarou trying his best to catch the toddler. And when Shoyo spotted him, he had immediately ran towards Akaashi with a happy shout of "MAMA!" with Koutarou's own voice, screaming "KEIJI!"
Needless to say, Keiji really wishes he stayed with his mother for a few more days. Especially with his clingy husband and hyperactive child.