Ash and Eiji in Cape Cod. Illustration by Akemi Hayashi, the character designer of Banana Fish. This postcard comes with the KNOX pen case “souvenir” that went on sale on Ash’s birthday last year.
Link to the full-size scan is in the source. I’d appreciate it if you don’t reupload the image elsewhere. Feel free to use it for edits.
Source: drive.google.com