After the end of the war and the completion of your studies at UA, you and Katsuki are happily married

you are already eight months pregnant and have already prepared almost everything for the baby, except for the crib..

Katsuki was sitting on the floor in the nursery and diligently assembling a crib for the unborn child, while swearing and grumbling

Ha! yes, who needs this instruction, I will assemble the crib myself without it in no time!

it was a mistake