Not "the one", but definitely in my top 5:
http://www.mangago.zone/read-manga/emotion_circuit/
http://www.mangago.zone/read- manga/crows_zero_borderless/uu/crows_zero_borderless-chapter-6/26/
http://www.mangago.zone/read-manga/mazu_wa_hitokuchi/
http://www.mangago.zone/read-manga/saiyaku_wa_boku_o_suki_sugiru/
These two are some of my top favorites, but I haven't seen many who have read them. I really recommend them for sure though!!
Akagami no Shirayuki hime is my absolute favorite manga, and before the anime was released not many knew about it, but now it's gained quite a bit of popularity so I don't know it it counts, but it's a super great read!
http://www.mangago.zone/read-manga/akagami_no_shirayukihime/
Hi, I was just wondering if anybody has favorite manga that they feel isnt well known? I mean is everybody's favorite manga a well known one? I know my favorite is well known haha and I think most of the really good ones are, so anybody like in love with not known or as liked manga?