Last and Cipher is the name of the 53rd episode of the Bakuman anime. It first aired on October 20, 2012.
Mashiro and Takagi decide that PCP won't be able to beat CROW and +Natural at their current pace. Takagi decides that writing a five-week long arc will increase PCP's ranking for week 25. They need to beat Eiji in order to be able to continue PCP so Mashiro and Hattori agree, though it's a risky tactic because the rating will go down until the finale chapter. Takagi thinks of the arc and it almost done but feels the story is lacking something. After seeing and talking to Aiko again, he realizes that PCP needs a rival character who is also able to push PCP forward as, just like their rivalry with Eiji, Fukuda and the rest does for them.