They can (usually on top or bottom, contrary to usual "in the middle" approach of classical western doors), but it's not very common, especially inside housing.
Also, yesterday...I Will Not Give Up HereKindergarten pick-up timeYour mommy has come to pick you up!Haruna is alright! Haruna heard nothing!Haruna-senseiHoushou-san's boobies! ❤️Waaa!You both will be grown-ups soon......so it's time to graduate from my breastsSo why is it OK for papa?He's a grown-up and yet he hasn't graduated from your boobs!