http://www.mangago.zone/read-manga/let_dai/
you can't get deeper than this but its shounen ai
http://www.mangago.zone/read-manga/totally_captivated/
also if you read this story remember to read this as welll cause it's the actual ending http://www.mangago.zone/read-manga/totally_captivated_dj_the_last_episode/
this is yaoi btw
http://www.mangago.zone/read-manga/my_life_with_you/
this one is also very good
http://www.mangago.zone/read-manga/breakfast_club/
i love this as well
http://www.mangago.zone/read-manga/the_inheritance_of_aroma/
This one is sooooooooooo beautiful
oh you know what...Kingyo sou...that one is sweet and a bit deeper...not too long...
http://www.mangago.zone/read-manga/taiyou_no_ie/ had the cutest shoujo main character I've ever read, not obnoxious at all. Deals with deeper issues.
http://www.mangago.zone/read-manga/aoi_kiseki/ actually a little deeper than I expected
http://www.mangago.zone/read-manga/shuukatsu_kimi_ni_naitei/ I really like it...might not be as deep as you wanted but its kinda a relevant issue for everyone eventually, what to do after school...
Sora Log
Of course there's Dengeki Daisy...its deep and beautiful
yaoi
http://www.mangago.zone/read-manga/mede_shireru_yoru_no_junjou/ kinda a sad subject but the love story is beautiful and its not at all depressing.
Yellow, Yellow was lovely...kinda older but awesome :D
Of course there's Ze, give that a try its deeper.
http://www.mangago.zone/read-manga/sayonara_itoshi_no_my_friend/
Dog Style is awesome
The man of Tango is one of the most beautiful things I've read...its very light bara, they just both look like grown men...the art is actually very pretty.
Oh and I forgot the last one I recommend to you has a sad ending I read it 2 times and I cried everytime but it's still very beautiful I can understand if you don't want to read it but from time to time reading sad mangas will do you good cause not everything in the word is fair and has has a happy ending but back to the manga I recommend because it's soo beautiful :( :( :(
Also be aware the last story is incest so if you don't like it don't read.
Here i got a reallysweet one and it has a happy ending i also recommend reading other mangas of the same author http://www.mangago.zone/read-manga/seven_days/
And this one is also very very sweet http://www.mangago.zone/read-manga/rutta_to_kodama/
I know right? I cried a lot t :'( I mean I think that the brother killed himself because he couldn't forgive him self for what he has done in the past and he thought that he didn't deserve that happiness which is why he wrote the letter and left and at the last moment before he died the look in his eyes when the other brother called him was soooo sad and somekind of a goodbye look he had on his face i cried soo hard. http://www.mangago.zone/read-manga/the_inheritance_of_aroma/mf/manga/the_inheritance_of_aroma/c009/pg-31/ But the story isn't finished you know? There are some raws about the kid of the brother who died and so on
Hellooooooooo
Can anyone recommend me a yaoi or shoujo manga with a beautiful and deep love story pleaseeee