As the last patient left out, completely healed, Retsu Unohana sighed heavily. Another day's hard work. Another boring-as-FUCK day! Day in and day out she did this for centuries. It was endless and ridiculous in her opinion. She'd patch up everyone in the Gotei 13 only for them to come back again and have to be healed.

Now, Unohana did care for others, make no mistake, but after centuries of working for the Gotei 13, she'd become tired. Tired of responibility, tired of healing, tired of the 11th squad, tired of everything! She wanted just run off and lead her own life, make her own decisions and do anything she wanted. Who knows, find someone special, get laid, and god knows what else.

Unohana walked back to her room, but not before stopping to drink a glass of liquid she had sitting on her desk. It was clear like water and had no taste, so while she was preoccupied with her thoughts, she saw nothing wrong. What she had forgotten that thing she had just drank was an untested protein shake Isane developed and given to Unohana to run some test on.

In that moment, Retsu Unohana's life changed in an instant.