I used google image search and this is what came up: https://en.whakoom.com/ediciones/646778/harada_mini_artbook_hkl-rustica_56_pp
okay so judging from the link that KUU sent the photo has alll of harada's couples. the one from your photo might be this one? https://www.mangago.zone/read-manga/henai/ but like you said i dont remember the black haired guy being a cop. the blonde haired guy definitely looks like a teacher though
I think it is henai after everything, i couldn't find anything else and those 2 often wore uniforms so
Does anyone know what HARADA manga these 2 are from? I've read everything by them and can't remember any which had cops as mc's?
https://www.mangago.zone/home/photo/40752408/