the English version as Destruction, Mayhem and Pain). The Muscle League has lost its edge and are overwhelmed by the young, well-trained fighters. Recognizing their weakness, the Seigi Chojin reopen the Hercules Factory (a school for superheroes) and begin training a new generation of heroes to take on the dMp. At first unwilling, Mantaro (Kid Muscle) is one of the young heroes and defeats his father to prove his readiness to graduate. He and the other new Seigi Choujin defeat several members of the dMp and meet Kevin Mask, who quits dMp when he discovers their lack of honor. They also battle Sunshine and his pupils, who destroy the dMp after developing a renewed respect for the fighting spirit of the Seigi Choujins. The manga continues with the New Generation Replacement Tournament, Mantaro's challenge to master his inherited potential (Kajiba no Kuso Chikara, "burning inner strength" or "the fire"), the return of the Chojin Olympics, a fight with the Demon Seed (a villainous group), a backstory for Robin Mask and a tag-team tournament set in the past. Although the manga begins as a fairly lighthearted, humorous (albeit violent) story, later arcs (the No Respect and Demon Seed storylines in particular) have a darker tone and frequently deal with psychological trauma. Publication Yoshinori Nakai and Takashi Shimada (collectively known as "Yudetamago"), friends since fourth grade, decided to create a manga series in high school. Before its regular publication, the series (originally a parody of Ultraman) was released as two one-shots in Shueisha's magazine Weekly Shōnen Jump in December 1978 and March 1979: which won the Akatsuka Award, and Its serialization began in the May 1979 issue and concluded in March 1987. Shueisha collected its 387 chapters into 36 tankōbon, releasing them from February 15, 1980, to April 15, 1988. The first 36 volumes were re-published as part of the Jump Comics Selection line in 26 volumes from July 19, 1994, to August 26, 1996, as part of the Jump Comics Deluxe line in 18 aizōban volumes from January 14 to November 18, 1999 and on June 6, 2013, all 36 were published in shinsōban format. A one-shot, , was published in Kadokawa Shoten's Kakutō Ace in January 1996. Despite the title, the series only began regular publication on November 28, 2011, in Shū Play News, Shueisha's web version of Weekly Playboy. The 37th tankōbon was released on January 29, 2010, and