One-Punch Man After rigorously training for three years, the ordinary Saitama has gained immense strength which allows him to take out anyone and anything with just one punch. He decides to put his new skill to good use by becoming a hero. However, he quickly becomes bored with easily defeating monsters, and wants someone to give him a challenge to bring back the spark of being a hero. One-Punch Man (ワンパンマン Wanpanman) is a Japanese webcomic, manga, and anime series created by ONE. The webcomic started in July 2009, with more than 100 million total views and 20,000 hits per day. Sheuisha's Young Jump Next picked up the series, as well as commissioned Yusuke Murata, to draw the series with the original writer, ONE.
Gokiburi Buster Humans may be considered at the top of the food chain, but when people are in the presence of cockroaches, they cower in fear. Who can they turn to when faced with these insects? The Gokiburi Busters, who have yet to fail to eliminate a threat! Gokiburi Buster is a One-Shot manga written by ONE and illustrated by Yūsuke Murata.
Makai no Ossan (Old Man of the Underworld) Makai no Ossan (魔界のオッサン) is a slice-of-life-in-hell kind of gag web manga about an underworld family consisting of a father called Ossan (who seems to be the main protagonist), his wife who is the mother of their children. Their oldest son who's the older brother known as Yuuji, a middle-school student called Tarou (the second protagonist next to his father), and the youngest child who is the younger sister called Hitomi. Each chapter is about one page each, and are fairly episodic where most do not continue a following plot while some other chapters do.
Dotou no Yuushatachi (Heroes of Fury) A Princess of a country is abducted by the Demon King. To save her daughter, the King of the country decreed that any hero that is able to beat the demon king will be wed to the Princess. The Princess, however, is extremely ugly that the royal court resorted to trickery by putting a fake picture in order to attract heroes. It was released on January 4th, 2012 in the Young Jump magazine. It's the shorter one of the two one-shots, consisting of only 19 pages. As you might expect from the low page count.
Reigen: Reikyuuchi Max 131 no Otoko (Reigen: The Man With 131 Max Spirit Power) Meet the self-proclaimed exorcist, spiritualist, and psychic himself. What he lacks in strength, he makes up for in charisma. What he lacks in bravery, he makes up for in ingenuity. What he lacks in heroism, he makes up for with massages and life advice. This is the story of Arataka Reigen and the Spirits and Such Consultation Office. It is the spin-off manga to Mob Psycho 100 created by ONE, which began publication on the MangaONE mobile app on 19th March, 2018.