http://www.mangago.zone/read-manga/on_doorstep/
not sure about the conman, but it is a thief?
theres one that has seesaw game in the name if you enter it in the search bar
Thanks guys!
This one is also good if anyone's interested
http://www.mangago.zone/read-manga/ii_mon_waru_mon/
this one is my favorite of aaall time, it's cute, hilarious, and a lil dark at times
http://www.mangago.zone/read-manga/anata_no_tame_nara_doko_made_mo/
I'm looking for yaois with a conman and a cop. Does anyone know any? Thanks :)