Rochat does not mention, overtly, that our friend tends to be ashamed of what we are doing, and also vast, so in that respect Urasawa's manga has more to say.
The manga "20th Century Boy" has been made into a three part film which I have yet to see. I have only just started reading the comic since I was a major fan of ”Monster” which I felt at the time was barking up the same tree.
Rochat, P. (1998). Self-perception and action in infancy. Experimental Brain Research, 123(1–2), 102–109. http://ift.tt/2cNK4xN
Rochat, P. (2009). Others in mind: Social origins of self-consciousness. Cambridge University Press.
Urasawa, N.(1999-2996). "20th Century Boys." Shogakukan. Tokyo