If It's Not Me, It's You (Welcome To The Cat's Game)

"But this pride... I'll just have to... get rid of it!" In which Light's personality doesn't change when he loses his memories of the Death Note, and he deduces that the only possible solution to the Kira Case is that he's Kira and just doesn't remember it—or that Ryuzaki is Kira and framed him for it. (continued again after more than 2 years, rofl?)