in every nook and corner; from A to Z; from head to toe; from cover to cover
four corners; four ordinal directions
Ōsumi (former province located in the east of present-day Kagoshima Prefecture, including the Amami Islands)
left-hand corner; lower left
unimportant things; insignificant things; trifles
witty and knowing; not to be underestimated; smooth operator
external corner angle of two walls, planes, etc.
internal angle of two walls, planes, etc.
internal angle of two walls, planes, etc.
sumiotoshi (judo); corner drop
Isumi Special Needs School (older name style)