I noticed that there is a contest in Web Sunday for Detective Conan. When you go to Web Sunday page, you will see a small picture for Ran like the above at the bottom-right corner. The following is written below it: “A picture of Ran-chan similar to the above is hidden in WEB Sunday somewhere. Click it when you find it. There is a chance that you enter a big price contest. Let’s start from “Detective Conan” Corner!” When you go to Conan Corner, you will find another picture for Ran at the bottom. Click on it, and it will take you to a new page with a question regarding Detective Conan, that gives you hints about the final Answer. The first question says: What is the name of the FBI Agent who used to be English Teacher in Teitan High school? The answer is ○○ディー．スターリング. Fill in the circles with appropriate Kana. At the bottom of the page, one more hint about where to find the next question is provided.

Edit: Click here to see the Questions & Answers of the online quiz