lost brush

How can Iwai work on his paintings without his brush? Please help!

When you find the brush, enter its location in the box. The location is the name of the page - for example, if it was on this page, the answer would be lostbrush.php. If it was on a level badge page, it might be something like level.php?rahenna01 instead. Do not include any part of the URL except the file name.

Where is the brush?
The brush will NEVER be lost on a card page.