Or Ebi Shima for that matter. A fun episode, despite feng shui not being interesting to me. Loved Riko's complete boke response at the end, had me in stitches. She's a natural at that kind of stuff.

What were the drawings? Was it their ideal classroom or something?

Forgive me for consistently not understanding this wonderful show

And again, Naver, Aiai??

They drew their own room.

Ayaka, Hinata and Kaho's rooms are very scattered.
Hayashi, Yama and Shima express the volume of the trash(clothes).
Hayashi(Forest / Kaho) < Yama(Mountain / Ayaka) < Shima(Island / Hinata)

momomofu said:

EbiChu＋＋20160922

12:54～
Hinata:I took 10 hours to clean the my room for today.
I haven't gotten used to seeing clean room, so couldn't get to sleep last night.

The winner isn't based entirely on how clean their room is but more on the Chinese Fengshui art.
The sensei in a mask is a Fengshui practitioner.
Part of Mirei's room was arranged with Fengshui in mind by her mom because her mom has some knowledge about it.
I think her curtain facing south, the coordination of her room color and room location has some harmony at work with Fengshui according to the sensei.

i don't think so

OK -- I haven't had time to watch it yet, but based on the preview screenshot...

Is Kirara-chan a selected name for baby of Takiue?

Poor toddler scarred for life now...
On the other hand the rugrat can feel lucky that it wasn't fed to the Syachis :)

^ Miku, but written 39. The number 3 can be read as Mi, the number 9 as ku. To use it as a name is really far out. Aiai was eating bee and hornet larvae as far as I can tell. Ayaka had ant egg jelly, and Riko had some sort of bug.