A series that allows you to learn educational content in a fun way through manga. Title: Studying is Useful Author: Yasushi Ota Title: Organization and Tidiness Author: Kue Irie Title: How to Love Studying Author: Kue Irie Title: How to Use Your Time Author: Kue Irie Price: 935 yen each (850 yen + 10% tax) These books have been read 2-3 times after purchase and then stored. They are in good condition.