Overload Haiji is the twelveth chapter of the Under Doctor manga series, written and illustrated by Kyo Tanimoto. It was released on April 12, 2026.
Plot
Chapter 12 begins where Chapter 11 left off with Maxwell asking Haiji why he is hitting himself to which Haiji responds by saying that it's his trump card. The trump card is calling Overload and Haiji says don't underestimate it. Haiji after activating Overload can finally see Maxwell's light points in his body and hands a hit on Maxwell. Maxwell then finally remembers what pain feels like and says this is his first time being injured by human hands. Haiji asks Maxwell to stop this fight to which Maxwell says that Haiji is the only one who can save him (kill him). Haiji remembers that in the first time he met Maxwell, Maxwell was dealing with Suicidal Ideation, that's when thoughts about wanting to die/disappear start intruding in a person's mind, but Maxwell possessed a body so invicible that no matter how many times he tried to stab and shoot himself, he couldn't die. Maxwell says he is approximately 80 years old (before he stopped counting), and has no control over his body or age. The chapter ends with Haiji offering to help Maxwell.