Oh and about Fuutarou's hand not being sunburnt is most likely due to Itsuki grabbing his involuntary when they went down the waterslide and rubbed a little bit of the sunscreen on his hand
What happened in the /a/ threads is the guy dumping the spoilers pages only dumped Itsuki panels misleading pretty much everyone. People thought that quints were disguised as Itsuki again and /a/ isn't really that fond of her because of the so called "main girls status". They seeth just at the...
Ragna and Crimsons interactions just make this manga worth reading. This started so awfully generic but now I'm always looking forward to it just because of these two