We know now who Hanna was, but from the flashbacks Min Gi looks to be someone from her past as well.
My guess, he was someone who was in love with her but she was in love with the past Seoha as well. Then she died, maybe related to Seoha, and Min Gi somehow had/has the power to keep them both reincarnated and remembering their pasts in the hope that they rekindle their relationship in the next live. But Jowon/Ji Eun kept going back to Seoha. I don't know how Seoha's mum got to do with this though.
You've read the webtoon. Has the story in the drama changed much from the webtoon?
I've mostly been watching currently airing dramas these days.
See You in My 19th Life (8/12) The pacing is pretty quick on this one since it's shorter. Things have started to unravel and I can't believe it will end next week!
King The Land (8/16) I'm sure by now everyone has gone crazy over that last scene on ep 8 lol! Consent is sexy indeed. Also, I really don't understand the hate Anupam Tripathi gets from this. His character was so adorable! I saw a comment on MDL that says his instagram was flooded with hate messages. The poor guy.
Numbers (4/16?) Haven't caught up with the latest 2 eps yet. Somehow I'm not really feeling this drama.
Dr Park's Clinic (8/12) Comedy and heartwarming drama on the life of Dr Park, an internal medicine doctor who just opened his own clinic. It's a good drama that I'm just watching very slowly these days.