From fencer_x ! The full review of the final show is here but this is the part I was waiting for:
The scene that follows is a special one written just for the musical by Bleach’s mangaka, Kubo Tite himself.
Unohana and Zaraki share a conversation while he’s confined to the hospital, during which Unohana tries to get him to understand the true meaning of being weak or strong, and how much more it has to do with one’s spirit than one’s physical body, that caring for others is more a mark of strength than beating them down. She speaks of this with him while arranging the flowers she brought for him in a small vase. As she’s about to leave, Zaraki hesitantly asks her what the flowers are called, and she chuckles at the unexpected reaction from Zaraki, placing the small vase on the bed in front of him and saysing, “…Please give them a name yourself.”
Zaraki thanks her, and she leaves, ending the scene with the chorus of her song: