the characters of the main pairing start off not in a relationship and focuses on the slow development of a romantic or sexual pairing.
This is slooooow lol http://www.mangago.zone/read-manga/starting_with_a_lie/
Starting with a Lie
Heesu from Class 2
Jazz for two
I dont know that one...
Seconding what I like boobs said. I read it yesterday and it was quite good
I would like some slow-burn shounen ai manga/-hwa/-hua.