Proper Japanese Title: ジャンプインジャンプ ボボボーボ・ボーボボ×デスノート
This mini-issue was originally included with Weekly Shonen Jump #1782 - No. 21, 2004. It is notably distinct from the first three issues of Jump-in-Jump for multiple reasons. Instead of containing a single extra-length special chapter, it is formatted like a flipbook and contains two regular-length special chapters. In cover design it is also meant to resemble the Jump Comics collected editions instead of an issue of the Jump magazine itself.
Finally, the chapters are drawn by the artists of the opposite series (Yoshio Sawai draws the Death Note chapter and Takeshi Obata draws the Bobo chapter) and were actually panel-for-panel restylings of the canon chapters released in the previous week's Jump issue.
