Malachite

Kurama has lived in his blonde kit for three years now. And it’s already a much better experience than anything he had to deal with during his captivity in Uzumaki Mito and Kushina.

For one, he is not pinned and chained down like some voodoo doll. 

Second, while his space could be a bit better(some sunlight and less water) he has room to roll around and stretch.

Third, he can feel his siblings much stronger now. He can feel Shukaku’s pain and all the way across the waters to Saiken and Isobu.

And watching through the brats’ eyes as the party is in full swing, soaking up the positive energy in the air, he knows he made the right decision, listening to Pinky years ago. 

The chakra from father that Pinky had unknowingly brought to him allowed him to move over to Naruto easily after undoing the splints and chains during the labor. 

At her initial behest, when they continued to meet, he left just enough chakra in Kushina that she wouldn’t immediately die, turning her into a pseudo-jinchūriki. Something, she assured him that was possible. Showing him memories of one boy in fire temple who will probably no longer have to worry and those two Hagoromo boys he ate decades ago. 

After an adjusted sealing and confirmation that Kushina would not in fact, die, he was left alone. 

So Kurama watches contentedly at the happiness around his blonde kit. Someone says naptime, and immediately, he pulls his three kids into his space once they’ve laid down and cuddled together.

(Yes, they’re his. He’s been babysitting them for years now. He feels he can claim them as such.)

Grumpy reminds him of him. Pouty, frowning, but loves to curl up in a ball and sleep, cuddled next to someone warm.

Pinky is his unofficially adopted pseudo sister/child, considering her sibling-like relationship with Asura and Indra.

His brat is a ball of sunshine that makes up for the dank, sewage-like space.

Though Pinky had assured him that once Naruto was older, she would help walk them through loosening the seal and balance and alteration of mind spaces.

“KURAMA-CHAN!”

Lifting his head off his forearms, Kurama watches his three brats run through the bars and begin to climb him. The pitter-patter of their feet is a common occurrence, as is the tugging on his fur. Grumpy immediately goes for his tails, Pinky skips towards his hands and curls into a ball atop his palm. Brat is trying and failing to climb atop his head.

Father… I hope you’re proud of me.