Naoki Urasawa's Monster, whether in its original manga form or Studio Madhouse's anime adaptation, is a critically revered story and a cult classic. A psychological thriller that deals with philosophical themes, such as the nature of good and evil, as well as the tension between hedonism and nihilism, there's always something to further explore in Naoki Urasawa's magnum opus. Because the story left a lot to be unpacked, even Monster's ending requires further explanation.
Source：https://www.cbr.com/monster-ending-explained/
