[Two male leads, quick transmigration, bad endings, the System plays a minor role, frail constitution]
(I can't write a blurb... How about you just give it a try? Since you're already here, anyway.) (Warning! This story features a romance between two male leads, not a heterosexual romance! If that's not for you, please leave via the top-left corner! Thanks for understanding, dears OVO)
Here's the introduction ⬇
Every day, countless people die in this world. Life is always fleeting. In the struggle between life and death, what is the key to holding on?
World One → Modern-day big fool and emo young master (complete)
World Two → Emperor's cousin * frail young noble (complete)
World Three… (Read on for details, dear~)
[This is a shameful old work! Do not enter! Tomato won't let the author take it down, sob sob sob!]
I would blindly guess that the author is probably a young child.