Unique monsters that suddenly began to appear all over the world from the beginning of the 20th century. At first, human beings tried to resist, but in the face of their enormous power, they came to the conclusion that complete extermination was impossible, and concentrated their wisdom on monitoring and analyzing monsters. The United Nations Kaiju Observatory (commonly known as Coulons) was born. Leading by the indomitable leader Yuichiro Kaido, the authority of monster ecology, Toji Kobayashi, the talent of monster function analysis, Claire Coleman, the maverick of monster disaster prevention, Kenny Mikoshiba, and the nobleman of monster strategy, Nikita Tarkovsky. A new generation Lulu de Picard who paved the way for monster linguistics, and Guillermo Marquez, a monster life science tycoon. Experts in monster science monitored and analyzed hundreds of monsters, and continued to explore a world where monsters and humankind live together.

In the early Showa era, Japan’s first women’s law school opens, and the protagonist, Inotsume Tomoko (Ito Sairi), gains nationwide attention as one of the first female lawyers in the country. However, after facing wartime Japan’s harsh realities and losing everything, she becomes a judge with her legal knowledge and dedicates herself to establishing the family court. She stands passionately for the hardships that politics and economics cannot solve.

Set during the early Showa period, Yakumo enters the world of rakugo. He forms a friendship with talented storyteller Yurakutei. Yakumo admires Yurakutei’s talent and struggles to achieve his level of performance. With the help of geisha Miyokichi, Yakumo grows up as a rakugo storyteller. Yurakutei and Miyokichi get married, but they die in a mysterious accident. Yakumo takes Konatsu, who is the child of Yurakutei and Miyokichi, and raises her. Konatsu grows up blaming Yakumo as her parents’ enemy. Konatsu and Yakumo’s disciple Yotaro chases after the truth of her parents’ death, which Yakumo hides.