殺到

1. Origins, structure, and basic meaning

• Structure: 殺到 (さっとう) is an intransitive action noun for orders, questions, or people flooding into one destination.
• Basic usage: 注文が店へ殺到した reports orders flooding into a store on release day, while 質問が事務局に殺到している describes questions continuing to pour into an office after an announcement.

2. Common pitfalls and similar expressions

• Incoming items and destination
  • 注文が and 質問が are the incoming subjects, while 店へ and 事務局に are their destinations. The store or office does not rush toward the orders or questions.