Set in 2142, Wonderful Days depicts a world that has been nearly destroyed by environmental pollution. Human life as we know it is almost extinct, and only a few were able to pull through the collapse of Earth's ecosystem. In order to deal with the chaos, a city named Ecoban was created. The city uses the very pollution that caused the disaster as an energy source.

However, although the initial plan was successful to an extent, it didn't just create a new source of energy, but also an elite group of people. This prestigious faction believes that they are above the system, and are not willing to accept survivors from outside the city unless they are put to work as laborers.

Among the people living in the wasteland outside Ecoban is a young man named Shua. He leads a very difficult life, but tries to make the most of it through the love that he feels for his childhood friend Jay. Unfortunately, Jay may be more interested in her security commander Cade than in Shua, and thus a love triangle is formed. Not only does Shua have to deal with the heartbreak, but he must also find a new way to survive in the crumbles left from the once-beautiful planet Earth.

Tokyo is currently experiencing rain showers that seem to disrupt the usual pace of everyone living there to no end. Amidst this seemingly eternal downpour arrives the runaway high school student Hodaka Morishima, who struggles to financially support himself—ending up with a job at a small-time publisher. At the same time, the orphaned Hina Amano also strives to find work to sustain herself and her younger brother. Both fates intertwine when Hodaka attempts to rescue Hina from shady men, deciding to run away together. Subsequently, Hodaka discovers that Hina has a strange yet astounding power: the ability to call out the sun whenever she prays for it. With Tokyo's unusual weather in mind, Hodaka sees the potential of this ability. He suggests that Hina should become a "sunshine girl"—someone who will clear the sky for people when they need it the most. Things begin looking up for them at first. However, it is common knowledge that power always comes with a hefty price... [Written by MAL Rewrite]

Mitsuha Miyamizu, a high school girl, yearns to live the life of a boy in the bustling city of Tokyo—a dream that stands in stark contrast to her present life in the countryside. Meanwhile in the city, Taki Tachibana lives a busy life as a high school student while juggling his part-time job and hopes for a future in architecture.

One day, Mitsuha awakens in a room that is not her own and suddenly finds herself living the dream life in Tokyo—but in Taki's body! Elsewhere, Taki finds himself living Mitsuha's life in the humble countryside. In pursuit of an answer to this strange phenomenon, they begin to search for one another.

Kimi no Na wa. revolves around Mitsuha and Taki's actions, which begin to have a dramatic impact on each other's lives, weaving them into a fabric held together by fate and circumstance.

[Written by MAL Rewrite]

Kimizuka Kimihiko is a crisis-magnet. From getting caught up in a crime scene to accidentally witnessing a drug deal, trouble seems to find him around every corner. So it is no surprise when his rather mundane flight suddenly enters a state of emergency with a dire need of a detective onboard. Unfortunately, his attempt at avoiding trouble is foiled by a beautiful girl with silver hair who goes by the codename Siesta. Declaring herself a detective, she unceremoniously drags Kimizuka into the case as her assistant. That incident spelled the beginning of an adventure around the globe that went beyond his wildest imagination. Putting their lives on the line, the two took down criminal organizations, prevented disasters, and saved thousands. But the curtain closed to their epic journey with Siesta's untimely death three years later. Resolving to live an ordinary high school life this time, Kimizuka spends a year maintaining a low profile. However, as fate would have it, a girl with an uncanny resemblance to Siesta comes crashing into his life, threatening to throw his peaceful days into disarray. [Written by MAL Rewrite]