Originally this was part of a webtoon called 19 ays where different artists drew 1 day of 19 in their own style. Old xian continued the series on their own and just kept the name.
I thought it was cus the days they were 19
Oh. I thought there was something deeper. Like it could be someone who has 19 days left was just remembering all of these, He Tian for example. Idk lol
i hope not, i think another reply answered your question
I wonder why the title is 19 days