Manga/ Manhwa that made me cry like a baby

IT WAS LITERALLY PERFECT.
THE YELLOW DRAGON ALWAYS CHEAKED ON DOJIN NO MATTER WHAT, THEY LOVED EACH OTHER.
HEALTHY REALATIONSHIP.
I CRIED IN THE END WHEN DOJIN WAITED FOR MORE THAN 50 YEARS WAITING FOR YELLOW DRAGON & WHEN HE DIED HE MET HIM.
HIS NIECE WAS SO ADORABLE WHEN SHE CRIED AT THE END WHEN SHE SAW THEM TOGETHER

I FREAKING THOUGHT THAT THEY WOULD MEET BUT THEY DIDN'T!!
THE SEME THOUGHT THAT THE UKE LEFT HIM BUT HE DIDN'T KNOW THAT HE DIED IN PRISON AND COMTINUED ON SENDING LETTERS TO HIM.
IT BROKE MY HEART, I CRIED FOR TWO HOURS STRAIGHT WHEN I READ IT, FINISHED IT RE- READ IT AGAIN CUZ MY STUPID SELF DIDN'T REALIZE THAT DIDN'T MEET AND HE DIED IN PRISON AND THE OTHER GREW OLDER THINKING THAT HE LEFT HIM.

IT HAD DIFFIRENT KIND OF STORIES.
THE WAY THAT YOU CAN'T PREDICT WHAT WILL HAPPEN NEXT IS SATISFYING.
A LOT OF THEM HAD A TRADEGY ENDING, AND OTHERS GOT HAPPY ENDINGS.
IT MADE ME CRY A LOT.
I RECOMMEND IT IF YOU LOVE ANGST

IT MADE ME CRY FOR MORE THAN HALF A YEAR!
I'M IN DEPRESSION BECAUSE OF IT.
THEY ADE ME BELIEVE IN LOVE AGAIN.
THEY WERE SOULMATES WHO WERE FATED TO MEET E/O.
THEY BOTH LOVED, PROTECTED E/O.
IT BROKE ME HOW ASH DECIEDED TO DIE FOR THE SAKE OF EIJI TO LIVE A SAFE LIFE.
IT BROKE ME HOW EIJI LOST HIS SOULMATE & WENT TO LIVE IN NY BUT NEVER ENTERED THE LIBERARY AND STILL SEES ASH IN RANDOM PPL IN THE STREETS.
EIJI NEVER GOT OVER ASH EVEN AFTER 7 YEARS.
I'M IN SPAIN BUT WITHOUT THE S