Story is great but be a little more detailed about romance even though mc is not a virgin author should show his encounter with beautiful female and there parting so u can get a feel for time passing for immortal and also meeting with femous personality.so what I mean to say is do not rush for main arc mc interacting with history as a immortal has its own charm

Please explain the Smit chapter more don't rush the story ex he spend time with his wife then time skip you want even explain what happened in whole period you just ship time