after 2-3 years,i finally know what the title means lmaoooooo

What does it mean?

Yo don't say that and just not tell us what it means

Oh, don't mind me. I found it.
https://blog.gaijinpot.com/what-do-japanese-apartment-layout-terms-mean/

LMAO thats not what it means here though ! even i thought it meant that but it means something else. you'll find its meaning in one of the pages in the latest updated chapter

hehe well L-Last; D-Danshi(boy) ; K-koukousei(high school student)

Oh wow. Mindblown. It's funny though, the author is really smart to find the title

i know right XD no one mustve expected that

Ah I'm pretty sure it was the author's intention to have the title be LivingDiningKitchen because the story is about Shuusei and Ali living in an LDK together. The latest chapter I think is just a play on words.