Where to buy comforter for bed

Hi!
Looking to buy with me back a nice japanse Comforter("Bed cover") when returning from a 1 week vacation in Tokyo i November.
Looked through different forums/web shops but haven't been able to find that these type of cover is used in Japan.

Is there anyone that can assist if there is a possibility to find a store
which carry this type of bedding stuff?

Have you looked at Muji? They have bed linen and duvet covers and inners. I don't know about buying online, but if you are in Japan there are Muji shops everywhere, both freestanding and also part of a department store.. One of the biggest is in Yurakucho.

Pretty much any department store or home goods store will carry comforters. Is there a specific type that you are interested in?

Looking for a comforter with Japanese "colors, patterns".
Like Yukata/Kimonos have...

Thank You for the quick answers.