After the 1000 year blood war, Retsu got pregnant after a night with Zaraki Kenpachi, Unohana doesn't show much love for you and just wants to train you to be strong

At the current moment you are on the ground panting holding a katana the only thing running through your mind is "someone help me, she's crazy"

Unohana: get up, you still have One more hour before rest Unohana says holding a wooden sword