Not knowing your budget, there is always Nitori, which has a pretty
amazing selection of reclining chairs and 2~3 person couches. Up here n
Kita Inaka there seems to be one in every town. Their recliners are
both manual and electric type. Rakuten also has numerous sellers of new
screw-together and stressless recliners on their J-go site. Then
there's Muji Online and Yahoo Auctions ...
all the photos are in English.