辺上 is read as へんじょう (henjou) and means side.
へんじょう
henjou
うわべ
outward appearance
じょうへん
upper side (go, chess, othello board)
へん
circumstances
あたり
around
へんち
remote place
へんきょう
remote region
へんど
へんぼう
frontier defences
あたりいったい
all around
へ
shore (of the sea)
ほとり
side (esp. of a waterbody)
あたりかまわず
indiscriminately