Sprd 422 Mother And Son Trip Yuki Sakurai Avi C Anteprime Surgery Ra New Info

Also, "RA new" might mean she's newly diagnosed. So the story could start with Yuki battling RA, undergoing new surgery (Sprd 422 might be a new surgical technique or device), and then a trip with her son as a new chapter. Avi C is her son, who supports her.