Was he like absorbed or something? I think the worse part of these chapters is how the unnatural/unconvincing the transition from obito -> tobi is. they read rushed. And all of a sudden from a single experience Obito was turned into a murderous mastermind. You compare it to likes of Gaara, Nagato, and it's really off. Sure they too have had their key moments where they lost it, but the former protagonists also suffered years and years of turmoil....through discrimination and war. Rin died and Uchiha Naruto became the final villain in 20 pages. Bleh.