Update: The book return machine is not broken and is in good condition. Since Cathy is bored, come in and return the book and have a chat with her.
![The book return port is broken, so go inside and give the book to Cathy yourself.](https://tvwar.co.kr/images/240707/240707_220508/0.jpg)
Update: The book return machine is not broken and is in good condition. Since Cathy is bored, come in and return the book and have a chat with her.