Prompt 21

This past winter, Geralt grabbed a tower of books from the library and holed himself up in his room for practically the entire season. Eskel walks in one night, intent on just checking in on his brother, only to poke around and find that every book that Geralt is painstakingly studying is medical books, from how to deal with a sore throat to the most rarest of diseases. Eskel asks Geralt why he needs to know all of this, worried Geralt might be losing his mutagen-induced healing factor?! Is he getting sick!? Are his wounds not healing over time!? Oh GODS! Oh nvm- Geralt says he's fine :) He's reading all of this because... He met a human bard he wants to keep safe? Odd... Especially for Geralt... But whatever makes his brother happy! I just want a scene after some nice gay brotherly teasing that's like "Ow- Oh no.. Geralt, my arm was scratched by a branch. Hold on, I need to-" And geralt is like FROTHING and is like "WE NEED BANDAGES, THREAD, A NEEDLE, DISINFECTANT, NUMBING SOLUTION, AND I KNOW FOURTEEN DIFFERENT NATURALLY MADE POULTICES I CAN MAKE, AND I KNOW A HELPFUL SPELL A HEDGEWITCH CAN CAST AND-" "It's just a scratch, Gera-" "SHIT, SIT DOWN, I GOTTA FIX MY HUMAN BEFORE HE DIES AND I LOSE ONE OF THE ONLY GOOD THINGS IN MY LIFE"