Is that act legal?

That act is completely legal.

This plan was perfectly successful.

His action is unforgivable.

This project has been completed in its entirety.

She is good at playing the character of a 'legal loli'.

In Japan, the debate on the legalization of marijuana continues.

In Japan, the legalization of marijuana is being discussed.

Questions were raised about the legality of the act.

He is still a minor, so he does not have full capacity to act.