noun, noun which may take the genitive case particle 'no'
right above; directly overhead
Refers to a position exactly above something, without horizontal offset. Often used with の to modify a noun.
See also: 真下
ヘリコプターが真上を飛んでいる。
A helicopter is flying directly overhead.
真上の階に住んで
The person living on the floor directly above is very quiet.