People are not born equal, a realization that 4-year-old Midoriya Izuku faced when bullied by his classmates who had unique special powers. Izuku was one of the rare cases where he was born with absolutely no unique powers. This did not stop Izuku from pursuing his dream, a dream of becoming a great hero like the legendary All-Might. To become the great hero he hopelessly wants to become, he now will join the ranks of one of the highest rated "Hero Academies" in the country: UA. With the help of his idol All-Might, will he be able to claim the ranks and become a true hero?

In 2012, the world allegedly comes to an end at the hands of a human-made virus, ravaging the global populace and leaving only children untouched. It is at this time that vampires emerge from the recesses of the earth, likely followed by age-old horrors of the dark thought only to be myth. The vampires sweep the earth and claim it in a single violent stroke, subjugating the remnants of humanity and leading them beneath the surface to safety. This "protection" comes at the price of donating blood to their captors. At the age of twelve, Yūichirō and his friend and fellow orphan Mikaela plotted to escape along with the children in Hyakuya Orphanage. However, this resulted in their deaths and Mikaela sacrifices himself in order for Yūichirō to escape and be saved by members of the Moon Demon Company, an extermination unit of the Japanese Imperial Demon Army. Four years later, Yūichirō dedicates his life to destroy vampires and seek revenge against them for murdering his "family".

Welcome to Nanba, the world's largest and most impenetrable prison. Locked away in Cell Block 13 are four inmates - pill-popping Nico, burly food-loving Rock, gambling charmer Uno and Jyugo, who was born at Nanba and has made more escapes than any other prisoner there - who provide more than enough trouble for the tough Officer Hajime. Follow them and their numerous adventures within the walls of Nanba.

Taking place in the year 1937 on the eve of World War II, the story involves a mysterious spy training organization known as the "D Agency." The organization is established by Lieutenant Colonel Yuuki from the Imperial Japanese Army. His ideals lead him to recruit people beyond military academy graduates and personnel, while training them to become skilled agents in arts of manipulation. These agents would become a specialized team to conduct operations. One such antihero agent, under the name Jirou Gamou, goes on a harrowing mission to uncover secret documents titled "Black Notes," while battling forces from within and without his own ranks.

Taking place in the year 1937 on the eve of World War II, the story involves a mysterious spy training organization known as the "D Agency." The organization is established by Lieutenant Colonel Yuuki from the Imperial Japanese Army. His ideals lead him to recruit people beyond military academy graduates and personnel, while training them to become skilled agents in arts of manipulation. These agents would become a specialized team to conduct operations. One such antihero agent, under the name Jirou Gamou, goes on a harrowing mission to uncover secret documents titled "Black Notes," while battling forces from within and without his own ranks.