
Yup, they definitely are related. That pharmacist is even Leegang's mom(according to the translation in papago) and there are only two other characters that have the same hair color as Gio, the pharmacist and Gio's secretary(but ofc they are probably not related). Heck, why would the story even mention a side character's parents if they aren't relevant to the story.

Oh, I guess I misunderstood the translation(I only tried translating it on papago and the chapter is really hard to understand, I just saw the word "mom" and made an assumption). That's why she looked so young, I was like "How can you be his mom when you still look young and gorgeous" . My bad! Why did it not cross my mind that she was his sister?(/TДT)/

Kyaaaa that was really suspicious maybe they have the same condition but its not so critical like gio, we see leegang walking on the rain ofc with umbrella but he doesn't need scarf or jacket so yeahhhh dumdum
Anyways rest assured that leegang will not interfere cuz the author said that he has a owner (≧∀≦)
So yeah I read some raws,
We all know that Giovanni was adopted child, tweeter fans speculation that he is somehow connected to Lee gang, that was my speculation too cuz if you compare their faces, gahhhhhhh they look like brothers, and on the upcoming chapters, a women pharmacist will have a cameo and guess what she's freaking looks like gio and leegang (gio is tan while the two have brighter color, but gio is much more hotter) anyways as the author said, it's just the beginning, so folks let's wait for the upcoming drama. ლ(´ڡ`ლ)