[REQUEST]recommendations on some Jpop/Jrock male artists/bands?

[Chiharo]

Everything by I listen now is Female Jpop/Jrock.
I never really even though about trying male artists or bands...but
I decided to try some out,but I don't know which one should I start from or which songs are good.

So can anyone help me please?
I'm sure lots of you here listen to a lot of Jpop male artists ^^
So which ones do you think are the most worth to listen to?

Thanks in advance!