I think i've read most of them

Well, there is drama but it was really cute though. so I don't know if you'll be interested in "Dream Away"

Fluff~ http://www.mangago.me/home/mangalist/767246/

Salad Days (Tang Liuzang)

These are just some of my fav shounen ais with little drama:

http://www.mangago.me/read-manga/kisses_x_kiss_x_kisses/
http://www.mangago.me/read-manga/heesu_in_class_2/?1WiM
http://www.mangago.me/read-manga/19_days/
http://www.mangago.me/read-manga/here_u_are/?5jig
http://www.mangago.me/read-manga/sasaki_to_miyano/
http://www.mangago.me/read-manga/jazz_for_two/?h3eo

Hanaya no Nikai de (it does have some personal drama—well, more along the lines of anxiety induced depression)
Fools
Doukyusei*
Hey Your Cat Earns Are Showing*
Komatta Toki Ni Wa Hoshi Ni Kike (it’s been looooong time since I read it so don’t recall if it really is completely drama free or not)
Hidamari ge Kikoeru
Senshun Kansoku
Sukijanai Kedo Aishiteru
Rainy Days Yesterday
Kinou Nani Tabeta
Most (if not all) of Mito Ori’s works

*have anime

SHOUNEN AI⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ᴺᴱᵂ ˡᶦˢᵗ
http://www.mangago.me/home/mangalist/838991/

Follow the list to be updated. And if you liked the mangas/manhwas I included, please do recommend. Enjoy~ (人 •ᴗ•)

Check out some of Tanaka Suzuki’s work—I’d suggest The Prince of Happiness, Menkui, & Muchuu No Hito. They aren’t pure fluff; they’re usually more along the lines of comedic fantasy/sci-fi.