HERES ONES WITH SAD ENDINGS:
December rain
Timeless melody (shounen ai)
Paradise view (sequel to Kimi to paradise first )
Banana fish LOLLL (shounen ai)
1866
Home far away
happy endings but whole story is like sad:
Dark Heaven
Pearl boy
taming the tiger
Never understand (shounen ai THENN read incorrigible which is a Yaoi)
Yatamomo (GETS DISTURBING)
Stigma
LITERALLY ANYTHING BY HARADA
sorry that's all I can think of so far ALSO PLEASE READ THE DESCRIPTIONS OF THEM INCASE THERES ANYTHING THAT'S NOT YOUR CUP OF TEA
Bless you sweet sumeer child
*Summer
gimme some good doomed yaoi