it's a yaoi manga (japanese, black and white) where the world they're in is sorta futuristic (but it's not like full on sci-fi) and everyone has a device that is implanted in them in their teens, and that device helps with decreasing sexual harassment/assault and as a result, there are sex exclusive areas in public (such as rooms to have sex in at their workplace, adult sex train carriages etc.)
the mc and ml are work senpai and kouhai and the mc is gay (or at least was told he was gay when he got his device implanted)
it's a yaoi manga (japanese, black and white) where the world they're in is sorta futuristic (but it's not like full on sci-fi) and everyone has a device that is implanted in them in their teens, and that device helps with decreasing sexual harassment/assault and as a result, there are sex exclusive areas in public (such as rooms to have sex in at their workplace, adult sex train carriages etc.)
the mc and ml are work senpai and kouhai and the mc is gay (or at least was told he was gay when he got his device implanted)