怎么找到图书馆的钥匙？
You can find it in the library without getting caught by Yuri.
OK，谢谢（＾ω＾
How can I avoid being caught by Yuri?
If you're on the key-copying quest, you need to sneak the key from her and quickly take it to the locksmith. Then, get back to the library before time runs out.
