Flowers Agent Texthooking
Download agent-v0.1.3-win32-x64.zip from here https://github.com/0xDC00/agent/releases
Launch both agent.exe and Flowers.
Find the cross-hair icon next to the "Target..." text field.

Click and hold the cross-hair, then drag it over to the Flowers game window and release.
If successful the text field will be replaced with something like 26112|FLOWERS, but the number will be different.
Click the drop down arrow next to the "Script..." text field, and click "Update scripts"

Now click the drop down arrow again, and select PC InnocentGrey FLOWERS Le volume sur printemps
Finally, click the green "Attach" button.