Books like 20Th Century Boys #1
Naoki Urasawa, Daruma Serveis Lingüistics S. L.
20Th Century Boys #1 is 224 pages, about 4 hours 6 minutes at 250 words a minute.
12 books to read next
How long each takes
My Hero Academia, Vol. 1 3.5 h 
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Attack On Titan, Vol. 1 3.8 h 
Death Note, Vol. 2 3.7 h 
Ultimate Spider-Man Vol. 6 3.2 h 
Naruto 33 3.5 h 
Attack on Titan 17.3 h 
BLAME! Volume 1 4.6 h 
Invincible, Vol. 1 2.2 h 
ワンパンマン 12 3.8 h 
Dallas 4.0 h 
Arkham Asylum 4.0 h Bar height shows length. Estimated at 250 words a minute.