Please Help Me Find This Manga

Hi guys,

Trying to find a manga about 3 brothers: ones a detective, ones a highschooler (named yuuto irc) and the last ones a junior/middle schooler.

The brother yuuto is super pure but he helps his brother in a dating service(?).
The youngest brother is a bro-con for the second brother, yuuto

Sorry I cant help much more. My memory is fuzzy

Found this gem on r/suddenlygay and tried to find it myself but gave up after a while... If any of y’all can find it or remember reading it that would be amazing :D I’ll post the picture in the comment!