If you’re confused about Legal Drug and Drug and Drop, don’t worry you’re not alone. I’ll definitely cover this more in-depth when I cover it in my CLAMP Reread series, but for now, I’ll share what I know. Legal Drug is the original story of Kazahaya and Rikuo working in a drug store and it originally ran from 2000 to 2003, when it was put on hiatus. Then in 2011, it was picked up again during the same time Kobato was being published and ran promoting each other. The series picks up in 2011 continuing the story but now in CLAMPs new art style.
I read Legal Drug years and years ago but have not read Drug and Drop at all so I’m excited to visit these soon for my series.