I'm curious as well how likely someone would want to buy the furniture with the house as well. 

And your net worth will thank you.If you still want to go ahead, you'd be better off buying a house than an apartment because, while the value of the building itself will go to 0, you'll still have the value of the land, bearing in mind that the land might actually lose value too given the depopulation and the yen depreciation.Sorry if I'm pooping a party but make sure you understand what you're getting into (which you're already doing by asking the forum) and then make the decision that's right for you according to your objectives.

Quote from @Rachel Vann: Investment Info:Other buy & hold investment.

Do not buy into the NAR spiel of crap tools.

Buy something else.

The majority of the business I do is buying small multi families and identifying the towns that are more favorable for investing. 

Where you pick will depend on your goals for cash flow and your budget to buy.

However, co-living allows you to acquire properties with as little as 0%-5% down, drastically reducing the amount of cash required.Instead of needing $100K+ to buy a rental, a co-living strategy lets you start with a fraction of the cost while achieving higher returns.3.

It's possible to buy property in Germany with as little as 5-10% down, making it an attractive option for service members and civilian government employees stationed there or planning to settle.

Long-term buy-and-hold rentals in stable neighborhoods, prioritizing consistent cash flow and responsible management over rapid appreciation.