Coming soon (or very soon)...

There's a few thing I was wondering...
-Penguin is wearing Bismarck's hat and Cotton has Seaport's horn but can we qualify this as cosplay (to add tags)?
-And how come the cover is in pink? My image file in my computer has the cover in red. This is weird (too much pink color hurt a bit my eyes...).

EDIT:
Well, I had to upload the cover from the artist pixiv account to get the right color. No idea why it became pink after I uploaded the Digital version of the doujin so I'm gonna use the red one for the pool.