アホリズム
Sequel
Aphorism - Dai Ni-bu
アホリズム 第弐部
manga
-Sequel of Aphorism. *Note: The chapter count got reset and a subtitle added, but the volume numbering wasn't reset. The first volume of this manga is thus compiled as the 15th of the original release.*
Spin-off
Bow and Arrow Aphorism
Do Aphorism· 弩アホリズム
manga
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The new main character is Hiroshi, a 15-year-old boy who can see the island in the sky. He and his friends enter Naraka High School as a test of courage but only he alone returns.
Spin-off
Da Aphorism
堕アホリズム
manga
Naraka High School is a seemingly normal school. However, unknown to the public is the cruel truth of what really goes on in the school's halls. Rather than studying, students are forced to struggle for their very survival. And the strong bonds of friendship may be the only difference between life and death. *Note: Includes 1 extra chapter.*