Recently, I heard some people on the community say that Zed were in a relationship with Ahri, and according to them, Redmercy was the one who said that. Is this true or just another kind of imangination? This question is not only from me, but also from many others, too. Please.
There is currently no canon info about Zed being in a romantic relationship with anyone.
In the canon lore he hasn't even met Syndra or Ahri.
The reason why Syndra and Zed are listed as "related champions" is most likely because they have similar backstories and ideals. Both had masters who disapproved of their powers and both ended up killing them(or at least this seems to be the case for Zed,we don't know what exactly happened there) and both think that the ionian traditions are limiting their potential. So if those 2 were ever to meet(which is likely going to happen eventually),they'll likely make an alliance.
Zed doesnt seem to be the romantic type. I dont think he even has a normal body anymore. Also league isnt really consistent with it's lore. I don't even know what the league of legends is anymore.
Guys, in the lore, Zed and Syndra are friends as shown
Wrong. They may be listed as "related" but that really doesn't mean anything until we have some modern lore for either of them.
Is this Zed x Ahri thing based of "Garden of Forgetting"? Because that is a very poorly supported theory.
