I’m searching for some yaoi manga with an interesting plot. Possibly not a webtoon, beca...

See any of these except the last list.... http://www.mangago.zone/home/people/335588/list/

If you like exotic ones, that could be something:

http://www.mangago.zone/read-manga/tsuki_to_yabanjin/
http://www.mangago.zone/read-manga/mother_s_spirit/
(here the story is not thaaat deep, but it's kinda cool xD)
http://www.mangago.zone/read-manga/to_take_an_enemys_heart/
(deep story! (づ￣ ³￣)づ )

or more normal but with a great story too:

http://www.mangago.zone/read-manga/void_zariya_ranmaru/
http://www.mangago.zone/read-manga/shangri_la_no_tori/
http://www.mangago.zone/read-manga/jealousy_scarlet_beriko/
http://www.mangago.zone/read-manga/fushidara_na_hanatsumi_otoko/

They are all kinda unusual and special ヾ(☆▽☆)
Hope you find something that's your taste xD

Love this one http://www.mangago.zone/read-manga/koujitsuei_no_tobira/