Answer:
薬 YAKU, kusuri - medicine, healing
由 YUU, YU, YUI, yoshi - reason, cause
曲 KYOKU, ma(geru), ma(garu) - curve, bend
典 TEN - law, code, ceremony
興 KOU, KYOU, oko(su), oko(ru) - interest, prosperity, flourish
They all look the same when reflected in a mirror!