Now that the episode is out, the title of Yamashita's book seems consistent with the manga in being
though it looks like the crab's pincher contains 右 here (but maybe that's just me).
The source for it ending on the March 8 issue is here: http://4nn.cx/.143760 and considering the 3rd volume is to be released next week (February 28th), it'd be quite weird for it to be a planned ending.
In case anyone's wondering, the text on the blackboard on page 4 presumably references what they're currently reading, i.e. Lemon (檸檬) by Kaiji Motojirou (梶井 基次郎).
In case anyone wanted to know: the extract on page 10 is from https://www.washingtonpost.com/archive/opinions/1991/04/24/iraq-dictatorship-is-the-problem/86c6f2ad-b6e0-46b4-9c3e-dabeb62acc68/ and reads: