I have been looking at the art of BotI and Samurai Zombie for so long now that I can no longer tell where I see actual similarities or where I am hallucinating or where I can go "AAAGH I KNOW THAT BOTI POSE WHERE IS IT FROM" and not be able to actually find it in the manga. It helps that the artist is mostly lifting stuff from the first few volumes, though. :D

I am not sure about either of these. They don't look exactly alike: the shadows fall differently, the bottom one only works if you tilt it, etc. But hmm. The thing that makes me suspicious about the top one, even though the hand is different, is that the Samurai Zombie's nose slants exactly in line with Manji's nose, and then the rest of the SZ's face has been rearranged around the nose (oddly, so that it looks like his face is melting). I don't know. Am I hallucinating?