Simon and Kamina were born and raised in a deep, underground village, hidden from the fabled surface. Kamina is a free-spirited loose cannon bent on making a name for himself, while Simon is a timid young boy with no real aspirations. One day while excavating the earth, Simon stumbles upon a mysterious object that turns out to be the ignition key to an ancient artifact of war, which the duo dubs Lagann. Using their new weapon, Simon and Kamina fend off a surprise attack from the surface with the help of Yoko Littner, a hot-blooded redhead wielding a massive gun who wanders the world above. In the aftermath of the battle, the sky is now in plain view, prompting Simon and Kamina to set off on a journey alongside Yoko to explore the wastelands of the surface. Soon, they join the fight against the "Beastmen," humanoid creatures that terrorize the remnants of humanity in powerful robots called "Gunmen." Although they face some challenges and setbacks, the trio bravely fights these new enemies alongside other survivors to reclaim the surface, while slowly unraveling a galaxy-sized mystery. [Written by MAL Rewrite]

Hachiman Hikigaya is an apathetic high school student with narcissistic and semi-nihilistic tendencies. He firmly believes that joyful youth is nothing but a farce, and everyone who says otherwise is just lying to themselves. In a novel punishment for writing an essay mocking modern social relationships, Hachiman's teacher forces him to join the Volunteer Service Club, a club that aims to extend a helping hand to any student who seeks their support in achieving their goals. With the only other club member being the beautiful ice queen Yukino Yukinoshita, Hachiman finds himself on the front line of other people's problems—a place he never dreamed he would be. As Hachiman and Yukino use their wits to solve many students' problems, will Hachiman's rotten view of society prove to be a hindrance or a tool he can use to his advantage? [Written by MAL Rewrite]

Shigeo "Mob" Kageyama is now maturing and understanding his role as a supernatural psychic that has the power to drastically affect the livelihood of others. He and his mentor Reigen Arataka continue to deal with supernatural requests from clients, whether it be exorcizing evil spirits or tackling urban legends that haunt the citizens. While the workflow remains the same, Mob isn't just blindly following Reigen around anymore. With all his experiences as a ridiculously strong psychic, Mob's supernatural adventures now have more weight to them. Things take on a serious and darker tone as the dangers Mob and Reigen face are much more tangible and unsettling than ever before. [Written by MAL Rewrite]

For weeks, Atsushi Nakajima's orphanage has been plagued by a mystical tiger that only he seems to be aware of. Suspected to be behind the strange incidents, the 18-year-old is abruptly kicked out of the orphanage and left hungry, homeless, and wandering through the city. While starving on a riverbank, Atsushi saves a rather eccentric man named Osamu Dazai from drowning. Whimsical suicide enthusiast and supernatural detective, Dazai has been investigating the same tiger that has been terrorizing the boy. Together with Dazai's partner Doppo Kunikida, they solve the mystery, but its resolution leaves Atsushi in a tight spot. As various odd events take place, Atsushi is coerced into joining their firm of supernatural investigators, taking on unusual cases the police cannot handle, alongside his numerous enigmatic co-workers. [Written by MAL Rewrite]