The original image comes from Episode 125 of the original Sailor Moon TV anime series (in Sailor Moon S), which is credited to Ikuko Itoh for the character designs and being the chief animation director on that section of the franchise at Toei Animation.
You can fight love by daylight by watching Sailor Moon Crystal on Crunchyroll!
He also runs the YouTube channel about Japan stuff called TheDoctorDazza, tweets at @DoctorDazza, and posts photos of his travels on Instagram.