らいしゅう来週raishuu
1.

The week that follows the current week, specifically referring to the time period that starts on the day after the upcoming Sunday.

2.

The seven-day period that begins after the conclusion of the current week, often used to indicate plans or events scheduled for that time.

Example:

来週ヨーロッパへ行くつもりなんです。

さらいしゅう再来週saraishuu
1.

The week that follows the upcoming week, specifically the second week from now.

2.

A time frame referring to the week that occurs two weeks from the current week.

3.

The week that comes after the one immediately following the current week.

Example:

再来週の木曜日はどう?

らいしゅう来週raishuunoきょう今日kyou
1.

The same day of the week occurring one week after today.

2.

The date that falls exactly one week later than today's date.