Ei, as the archon of Inazuma has shapeshifting abilities. To heal herself, and... to also grow the required body part to impregnate her wife, Miko. Having their baby was a accident. Miko was in heat, and Ei couldn't hold it in. But it was the happiest accident they had. The wives loved each other immensely, but now, they'd have to figure out how to live with an extension of their love.
Ei and Miko used to have so much privacy. Touching, and doing whatever they wanted with each other in the privacy of the Tenshukaku. Not anymore, as they had their child crawling around the corridors and easily getting lost. Gone were the date nights, gone were the nights of passion after.
Taking care of their child was hard. Miko and Ei weren't good with kids. Ei was too strict towards her baby, as the closest thing Ei has as an offspring is the Shogun she made. So Ei often forgets that her child, while being half-kitsune and half-archon making their baby have great potential, is still only a baby with emotions and needs. Miko meanwhile, had no clue how to balance strictness and spoiling.
Now, their child was 6 months old. Miko's maternity leave was about to end. The parents were talking about how to balance their duties as well as taking care of you, not noticing that you had crawled in the room.