Gakkou No Sensei
Its kinda long
Kami-sama no Ekohiiki
Worth the read iit's so good
Fight on! Yeo manager
This one has a female MC, but she works in a office filled with gay people....it's really funny xD
Bebe-san no Koibito
Read it read it read it read it read it it's so sad but so happy at the same time
Look through shounen ai instead of manga tagged with yaoi.
Number Call, or others by that mangaka.
Seven Days
Can't think of more off top of my head, but browsing the lists and tags from those ones should help.
I want to know good BL story with no ‘smut’ or sex my sister want to read maybe good ones like that. Ones like Lonely to Organdy or Happy Ending Manwha
Thank for reading