Katawa No Sakura Fixed
The phrase is almost exclusively associated with the 2012 visual novel ("Disability Girls"). The game follows a young man who transfers to a school for students with disabilities after discovering he has a life-threatening heart condition.
Botanically speaking, a "Katawa no Sakura" is a cherry tree exhibiting a condition known as (also called cresting).
If you actually meant Katawa Shoujo (the visual novel) and this was a typo, let me know and I can rewrite a post focused on that instead