This is Paralogue 18, and focuses on Velour. It is unlocked by S ranking Flannel. It is on the Nohr and Touma paths only.
As usual, this is all done on my free time, and takes awhile. It can be a lot of work, but I do hope you enjoy! I am unemployed… so please consider donating if you like the work I do. : ) It certainly helps me keep going!
You can find data on the chapter itself here under “Paralogue 18” [P18] here.