翌週

1. Origins, structure, and basic meaning

• Structure: 翌週（よくしゅう） means the week immediately after a reference week.
• Basic usage: It can refer to the week after an event already mentioned, as in 旅行から戻った翌週.

2. Common pitfalls and similar expressions

• Different reference points
  • 来週 normally means next week relative to now.
  • 翌週 is relative to a week established in the account, so it can also describe past events.