Do you like life? Do you want to protect it?
They say that God helps those who help themselves. I don't believe in God but its good advice. The typical reaction to safety demands in Japan is to listen, reply with something irrational (either because they are irrational or not really thinking about it), maybe talk to someone else or have a meeting, then do absolutely nothing.
And rules? They are made to be broken. Nowhere is it more true than in Japan. And then when somebody dies the Japanese get all Nazi-like about the rules for a few months to a year and then its back to normal.
You can buy fire extinguishers at D2, Watahan, Cainz Home and so forth. They are not that expensive. Get one for the hallway and one for your own room. Encourage others in your building to do the same.
You could also buy a rope to escape, and I don't mean a glorified string, I mean a rope. It won't be cheap. You can use that to escape. It might be cheaper to get some of that glorified string and make a rope ladder yourself. You just better test it. It will stretch.
Even some chain might do the trick. I think Plus One might be the place for that. Cheaper than you might think. But get yourself some cheapo leather gloves from Workman, because dealing with that chain in winter won't be any fun. Leave the gloves with the chain at all times, in a box on the veranda or next to the window or door, and make sure there is a way to secure it, if not have one end already secured coming out of the box.
Also, do you have fire alarms? They can also be bought but I won't say they are cheap. If you already have them, test them. They tend to come with a test button. The batteries could be dead or dying. You might be able to inspect the dates on the batteries and the alarms.
I strongly suggest you take this bull by the horns yourself. No matter how right your complaints are, they won't save you in the event of a fire.