As Tsuna trains thoroughly for the raid in five days, Lal Milch is experiencing problems due to the Negative Seven Rays, so she excuses Tsuna to check on Yamamoto and Gokudera. It seems that Yamamoto needs more training, and Gokudera has flaked off from his training. Meanwhile, in Millefiore HQ, Byakuran has found out that Leonardo Lippi is an impostor whose real name is Guido Greco, a man who murdered 15 men and escaped from prison a year ago, similar to that of Mukuro. Byakuran finally reveals that Guido is also Mukuro, and they engage in a battle. Meanwhile, Tsuna finds out Lal's condition and starts to worry, but Lal Milch lectures him on 'choosing the right hell.'
Byakuran avoue à Leo qu'il savait dès le début qui il était : Guido Greco, un jeune homme possédé par Mukuro. Ce dernier va alors se montrer et engager le combat. De son coté, Tsuna se fait du soucis quant à la préparation en vue de l'attaque de la branche japonaise des Millefiore : en effet, aucun de ses gardiens ne semble être prêt…
Tsuna, Yamamoto e Gokudera continuano ad essere in difficoltà con gli allenamenti, Tsuna riflette così sulla decisione che deve prendere. Intanto Byakuran rivela a Leonardo Lippi di aver scoperto la sua vera identità.
阿纲等人再度开始进行训练。然而在途中，拉尔忽然指示阿纲去看看狱寺与山本的训练状况。即使感到诧异，阿纲还是先到山本那边探头露脸。在用作训练场地的道场里，里包恩与山本正在进行激烈的修行，不过似乎还没有什么成果。后来前往狱寺的训练场所一看，那里却只有碧洋琪一个人。
Tsuna va a ver como les va a los demás con su entrenamiento, Byakuran Descubre la identidad de Rokudo y empiezan a pelear, Tsuna descubre que Lal Mirch no está en condiciones de pelear y quiere posponer la invasión pero ella lo hace entrar en razón, Ryohei visita a Hibari para saber su opinión acerca de Tsuna en ese estado.
