Rurouni Kenshin 3-in-1 Edition manga volume 4 contains volumes 10-12 in an omnibus format and features story and art by Nobuhiro Watsuki.

With his sakabato shattered, Kenshin seeks the only swordsmith who can forge him a new blade. Instead, he finds one of Shishio's elite assassins waiting to take his head! Not even Kenshin can win this battle unarmed. What's more, his training remains incomplete. With no other option, Kenshin must return to the one person he never wanted to ask for help: his master.

Rurouni Kenshin 3-in-1 Edition volume 3 collects volumes 10-12 in omnibus format.