
like the type of story that will kill you with second-hand embarrassment
Definitely "I Believe in Happpy Endings" by Fujimine Shiki.
The embarassement here is REAL, and it's funny AF, too.
Here's the link: http://www.mangago.zone/read-manga/happy_end_o_shinjiteru/
we are at a point where no amount of traumatic childhood experiences can redeem this man