If you're looking for manga similar to My Hero Academia: Training of the Dead, you might like these titles.
Relish is an evil organization plotting world domination. The organization’s mad scientist Dr. Takizawa uses a cell-restructuring device on a young man named Katagiri in hopes of creating a superhuman, but the experiment is a failure. After fleeing the organization, Katagiri is astonished to find that when night falls, his whole body turns jet black and he gains incredible strength and the ability to jump to great heights! Now as Shadowman, Katagiri begins to fight against Relish...
A hero who manages world peace. There were twins who longed for their overwhelming power and vowed to “become a 'hero.'" However, a few years later, his younger brother, Yosai, broke his dream and became a cleaning worker to clean up the heroes. Yosai tells herself that she has a position (rank) that was decided by nature, with her brother who became a hero sideways. However, when I saw the despair of my important childhood friend, the dolphin, I was prepared to go against that fate with the first and last resolutions!
Since the government announced the existence of people with “special powers” 10 years ago, Shindo Susumu has longed for his own amazing abilities. However, he finds himself to be nothing but an average 15-year-old. Then one day, during his high school entrance ceremony, a power finally awakens inside him…but it’s not exactly the kind he’d always hoped for!
In Sternbuild City, corporate logos not only cover billboards, but also the costumes of the super-powered heroes that act as its protectors. Veteran and newcomer warriors of justice alike compete in a reality TV show that offers points for apprehending criminals while giving champions' sponsors a chance to promote their brand. When the low-ranking Wild Tiger loses his backing after a string of outrageous, botched rescues, he finds himself paired with an up-and-coming spotlight-seeker called Barnaby. But with their wildly different personalities, will the pair be able to save their beloved Sternbuild City and win the game show, or will their constant tension be the undoing of the world's first hero team?
Rokurou, the class cockroach (figuratively speaking), is visited at night by an alien girl who bestows magical powers upon him! Finally, he can ascend from his status of a complete nobody to the town's unique super hero! … Right?
Rinka is a financially struggling high school girl living with her single father in Tokyo. One day, while going home from school, she sees a penguin flying in the sky towards the Tokyo Sky Tree. She chases after it only to find fish swimming in the air! One of the fish goes through Rinka and causes her to pass out. She wakes up to find that she has developed the ability to slip through solid objects..
From Birdman, a superman from space, he received a mysterious mask and cape. Wearing these, even a slightly clumsy elementary student can transform into Perman, a hero of justice! Rescue the weak, thwart the evil. Together with his three friends, Perman does his best every day to protect peace on Earth!
Monsters are on the loose! But luckily for the people of Japan, heroes are there to protect them, with powers that run on a rate of yen per second. For Hiasa Sen, however, there are many more important things to worry about, like catching sales on groceries, and his many part-time jobs, all to take care of his little sister. When danger approaches, however, he has a secret power of his own, but it may be more trouble than it's worth.