Japanese movie about four kids left "home alone"

Does anybody know what movie this is?

Four half-siblings, same mother, different (unknown) fathers, left home alone while Mom goes out…and then never comes back. Kids have to fend for themselves to avoid being discovered by police/DCFS. Fairly recent, I think.

Nobody knows.

Thats the title, not a statement.

Here is the IMDB link .
I thought it was decent if not a little too long.

ding-ding That’s it! Thank you!

Do they set a bunch of comical traps to keep the Mongol housebreakers out?

I’m pretty sure you are making a Home Alone joke, but just in case you were serious; it is a rather tragic story of abandonment and neglet. It is really fairly depressing. And too long.
Did i mention it was too long?
Well, ya, its too long.