All those born in the 20th century have entered old age. In the near future, where the post-80s and post-90s generations have become grandparents, technology has advanced even further, with 666G achieving global adoption and life becoming highly convenient. In a family of six where everyone suffers from chuunibyou, the protagonist grandfather’s chuuni level is off the charts—he is determined to become the king of hiatus in the manga industry! Just as his hiatus period is about to surpass that of the historically famous hiatus king, the overwhelmed manga editor actually dispatches professional "2D police" to terminate the grandfather’s project, finally leaving him in a desperate situation where no one is willing to take him on. When he wants to create a new work, he realizes he has been holed up at home for too long and has lost touch with society. To ensure the success of his new project, the grandfather, with the help of his family, ventures into various aspects of society to experience the diverse facets of modern life, starting from his grandson’s school’s small manga club and overcoming numerous setbacks to rise again. The family’s interconnected comedic stories lead everyone into the near-future chuuni lifestyle!