Responses
I wonder why Geumsun is so protective of 704 when 704 is a reaper and even 704's blood can injure Hwan.. like logically 704 should be in least danger but who knows maybe reapers can die too. I have a feeling 704 and Yama are gonna meet eventually and Yama might be able to bring 704's memories back
Let's gather what we know so far.
Apparently san and hwan should have known each other. This explains the first time san met hwan (very first chapters), geumsun asked him if he know what he saw. But they both forgotten. (Even though in my opinion: hwan kinda reacted a bit).
Second, san lost his memories. Remember that hwan's power has something to do with memory?
San was able to conjure a bow and arrow when fighting hwan. It was stated that those kind of weapon was a bit ancient/traditional by 704. (Cmiiw). I dunno why but I feel like that's important.
Then, yama said that if hwan recognized san, he would NOT attack him. Why? Because then he wouldnt be an enemy to hwan? Or was san too powerful (remember i said ancient weapon) that hwan would just back off? Did they fight once in the past???? Is that why they put san to guard eunjae?
Last, they have the same white hair. Uh, maybe not so much the same, but still....
Please feel free to add more!