Tsuna, Reborn and their friends are in deep trouble! The villainous Mukuro appears to be unstoppable, and further efforts by Yamamoto and Gokudera to take him down only seem to prove the point. It finally falls to Tsuna to face this nemesis, though he knows he doesn't have a prayer of coming out of the encounter in one piece. His only hope is to receive a Deathperation Shot, but Reborn has only one left! Will it be enough?

"As if Reborn's training regimen at home and at school weren't harrowing enough, Tsuna soon discovers that even his vacations are now being co-opted by his 'tutor' to further the cause of turning Tsuna into a proper boss for the Vongola Family! But even his leisure travails pale when he finds out what awaits at the wedding of--Reborn and Bianchi!"--P. [4] of cover.