Summary:
There was a time when Nanaha tried to help Hyousuke with his studies, but he got so flustered at the sight of her tube-top that he couldn't concentrate.
The first Jigoku Shoujo DVD came out earlier this week, and one of the special features was the PV for the ending song 「かりぬい」 (Karinui) by Noto Mamiko.
Summary:
After Wilhelmina defeats all of Orgone's minions, she remembers a battlefield of the past where the previous Enpatsu Shakugan had bid her farewell.