Next week; the week after the current one.
来週の金曜日に映画を見に行きませんか。
Would you like to go see a movie next Friday?
来週は会議が集中しているので準備が必要だ。
I need to prepare because meetings are concentrated next week.
来週からテスト対策を始めるつもりだ。
I plan to start studying for tests next week.