A user read the novel and shared the novel ending with us, I did a quick translation
https://biusyublush.wordpress.com/2026/01/16/the-unclouded-soul-%e9%80%8d%e9%81%a5-novel-ending/

It's a shame that it's not known whether the ending was written before or after the drama, the ending of the novel is so much more comfy...