This might be wrong since I haven't read it, just googled "bl manga tofu" and found it on a list
https://www.mangago.zone/read-manga/omairi_desu_yo/
https://www.mangago.zone/read-manga/omairi_desu_yo/
I don't think this is what you are looking for. But tofu business! yayy!
Not sure if it's what you're looking for but the bottom sells tofu here https://www.mangago.zone/read-manga/hit_on_by_a_kinky_guy/
Did he had a baby?
I forgot this one manga tittle its BL/YAOI, one thing i remember is the bottom sells tofu, and the top helps his bussiness （￣へ￣）