just wanted to let you know how it went:
Was in Tokyu Hands first and found a futon for 5000 and a blanket for the same. There were some cheaper one but they were very thin.
I then went to 2 Outdoorshops in the Ekimae Shopping center in front of Osakastation and was shocked by the prices for campinggear. The cheapest inflatable mat was over 5000 and the cheapest sleeping bag as well. Because i will have a car (and sleep in the car not a tent) i decided to better look further into the Futon/blanket thing.
Went to Muji inside Hankyu Department store and they had a Futon for 5000 as well.
Last stop was Loft wich had a bit less choice than Tokyu hands and so i ended up buying the 5000 Futon and Blanket from Tokyu hands.
Thanks again for the quick and helpfull answers to everyone!
And i will try to get rid of a futon (100x200) and a blanket (150x210) in about a month in the Kansai Area
