This can be custom made by Carpentry shop and some KC cabinet company (Not Unity Kitchen because they only focus on KC). Iiko, Everskills also can customize it. I think the price should be around 1.2k-2.5k depending the design. Try to contact any carpentry company for the quotation.

My KC was done by Everskills. Workmanship is okay but the service is good especially the sales that I deal with Ivan You may refer to the Kitchen cabinet thread for info.

ugpm

I found japanese style bed similar to this pattern at president furniture, near taman connaught / alam damai next to econsave.. But the price might be higher than mentioned above..

Currently i saw they are doing promotion but didn't check for which product..

My masteroom bed are similiar design. Custom made, RM1.8k.

I am not in KL area.

Welcome.
My advise: Do you plan to made a sunken part in the middle?
I am not doing this. Reason is right now plan to buy queen size bed, but in future if wanna change to king size, the bed cannot be fit into the hole.

how bout something like these?

If sunken in, when time to change bedsheet very jialat as need to bend down very low and dig the matress out.
Just imagine, the frame is low, the sunken part is tight 

Just go to any furniture shop and show your japanese bed picture. They will quote for you the custom made bed frame. Furniture shop have contact on the carpenter doing bed frame. Try ask several furniture shop and compare the prices.

One thing to consider though...if married and wife is pregnant, low frame bed will be a problem.