Here is a concise summary of the provided text:
**Title:** Investigation into Nuisance Behavior at a Discount Supermarket
**Summary:**
* An investigation at a discount supermarket in Kawaguchi City, Saitama Prefecture, reveals a series of nuisance behaviors.
* Incidents include:
1. A man taking excessive free plastic bags and using them to cushion items in his backpack.
2. A woman swapping discount stickers on products to get cheaper items.
3. Another woman (in her 80s, living on a pension) shoplifting multiple items (worth ¥3,216) by hiding them in her bag and only paying for items in her shopping basket.
* The store manager and police intervene in the last two cases, with the shoplifting woman taken to the police station for questioning.
Here are the key facts extracted from the text, numbered and in short sentences:
**About Keima (initial part of the text)**
1. Keima is described as a serial nuisance at supermarkets.
2. He takes rolls of free plastic bags from supermarkets.
3. He uses multiple plastic bags to cushion items in his backpack.
**Nuisance Behavior at a Discount Supermarket**
4. The supermarket is located in Kawaguchi City, Saitama Prefecture.
5. A man in red was observed taking multiple free plastic bags.
6. He used 15 plastic bags to bag a single box of tomatoes.
7. Another incident involved a chocolate cake left in a gap between cardboard boxes.
8. A woman in a gray hoodie was seen tampering with discount stickers on meat products.
**Discount Sticker Tampering Incident**
9. The woman in the gray hoodie replaced discount stickers on meat products.
10. She was caught by a staff member who witnessed the behavior.
11. The woman admitted to changing the discount stickers when confronted.
**Shoplifting Incident**
12. A woman in her 80s, living off a pension, was caught shoplifting.
13. She had hidden multiple items in her bag and only paid for items in her basket.
14. The woman had shoplifted from 14 stores, stealing items worth 3,216 yen.
15. Stolen items included rice crackers, salmon fillets, and coffee.
16. A police officer took the woman to the station for questioning after a report from the store manager.