Seirei Academy is a prestigious school attended by the very best students in Japan. Alisa Mikhailovna Alya Kujou, the half-Russian and half-Japanese treasurer of the school's student council, is known for her intelligence, stunning looks, and rigid personality. Contrasting her near-flawless persona, Alya's unmotivated classmate Masachika Kuze slacks off during lessons and seems to show no interest in her. Initially irritated, Alya gradually becomes more intrigued by Masachika and starts expressing her affection for him in Russian. However, she is oblivious to his secret—he understands the language fluently! Due to a childhood friend who was temporarily staying in Japan, Masachika has been studying Russian in hopes of reuniting with her. As the two spend more time together, the playful and eccentric relationship between them quickly deepens. In the meantime, both must learn to navigate their new growing feelings for one another.

Torako Koshi is the epitome of perfection. With her peerless beauty, top-notch grades, and position as student council president, her popularity in school is unrivaled. However, she harbors a dark secret—she was a delinquent back in middle school—and this is something she conceals to the best of her abilities. Unfortunately, when she meets the mysterious deer girl Noko Shikanoko, Torako's hidden shame is constantly on the precipice of being exposed due to Shikanoko's rather weird antics. To maintain the reputation she worked so hard for, Torako must go along with Shikanoko's whims, even going so far as to become president of the newly established Deer Club. All her efforts will be rewarded if she can prevent the menacing doe from accidentally blurting out damaging details about her personal history that will undoubtedly unleash Torako's greatest nightmare.

Wei Ran, a college graduate, was accidentally led into a world he never thought existed by a cat. When he was trying to find a way to return home, he learned that the only train that could take him back to the human world would only arrive in half a year. He could only temporarily live in the shop run by Mao Mao Yaya - Guaixiang Sale. Just when life seemed to be settling down, Wei Ran unexpectedly discovered that no matter where he went, dragon scales would appear. And every time the dragon scales appear, it causes completely different strange effects... (Source: Bilibili, Google translated)

Takuma Kosugi is an office worker who does not have enough time to take care of everything at home. To make his daily life easier, he purchases a secondhand housekeeping robot named Mina, who quickly proves her worth. One day, after returning from work and having one too many beers, Takuma somewhat jokingly blurts out that she should become his wife! Much to his surprise, Mina takes his words seriously, and the two gradually begin living as if they are married. As the days go by, Takuma and Mina grow closer and start doing more activities together, like going on a picnic and spending a day at the beach. However, much of society still considers human-robot relationships unusual. The couple must figure out if their arrangement can succeed and how to convince the people around them of their sincerity.