Comment by IdleReader on Regressed life of the Sword Clan’s Ignoble Reincarnator - Chapter 51

Comment on ChapterRegressed life of the Sword Clan’s Ignoble Reincarnator - Chapter 51
I'm confused. How exactly did he survive long enough for the Kingdom's rule 5 years in the future after the lady dragon dies? Thought the Rose Palace fell before then, or the same day as the Holy Kingdom's appearance? He couldn't have got Noban's cure if he's supposedly dead??