User blog comment:IamJakuhoRaikoben/Chapter 262: Song For Stars, Review./@comment-201.19.239.208-20111203230448

In the beginning of the chapter they were saying that in two days they increased a lot their magic power. Now they have 5 days left. Sum it up and you have 7 days. I won't be surprised if something like " In 7 days of training they caught up 7 years" shows up.