Wait if this new ep is about Sungyeon’s grandpa and in ch. 11 Sungyeon’s mother said t...

Wait if this new ep is about Sungyeon’s grandpa and in ch. 11 Sungyeon’s mother said the grandpa used to doted on Sungyeon as his grandson. That mean Sungyeon is actually not the racarnation of the grandpa right? And the new ch. show the grand pa to be the master who recarnated, that’s why Hosik in Joseon era come to see him. Then is that mean our current Sungyeon that ended up with the recarnated Hosik is actually not the recarnation of the master in Joseon era just his grandson that happen to look alike?