

Was thinking of getting a smoke alarm for the 'mansion'.. Should I buy it myself or disturb the wa by asking the real estate company to provide it; are there regulations that require it?
If I buy it myself:
- Where?
- Any specifics I should check?
(I was just going to run to DonQ, but maybe it's one of those things that only the government sells for 200,000 yen?..)
GJ