Mangas are often having less chapters.. if you are looking for manhua/manhwa
http://www.mangago.zone/read-manga/name/
http://www.mangago.zone/read-manga/in_an_empty_classroom/
http://www.mangago.zone/read-manga/restless/
http://www.mangago.zone/read-manga/marionette_cereal/
http://www.mangago.zone/read-manga/pervert_hero_and_the_1_fan/
http://www.mangago.zone/read-manga/the_boss_is_too_much/ (seems incomplete but has a completed tag)
http://www.mangago.zone/read-manga/introduction_to_the_theory_of_love/
http://www.mangago.zone/read-manga/if_i_touch_your_hand/
http://www.mangago.zone/read-manga/burns/
http://www.mangago.zone/read-manga/cinema_next_door/
http://www.mangago.zone/read-manga/the_aesthetic_of_good_looking/
http://www.mangago.zone/read-manga/oh_my_hotel/
http://www.mangago.zone/read-manga/when_the_heavens_smile/
http://www.mangago.zone/read-manga/like_that_winter_flower/
They've 10 or less than 10 chapters, though I don't recommend many of them since they lack a proper plot and rushed and only about sex..
What are some yaoi manga's with very few chapters? Like less than ten.
I have like no patience so I usually give up halfway through reading longer ones.
(Nompregthough)