While at school, Mai Taniyama and her friends like to exchange ghost stories. Apparently, there is an abandoned school building on their campus that is the center of many ghost stories. During the story, they are interrupted by a mysterious male figure. The person turns out to be Kazuya Shibuya, a 17-year-old who is president of the Shibuya Psychic Research Company. He was called by the principal to investigate the stories surrounding the abandoned school building. The next day, on the way to school, Mai passes the school building in question. While examining a strange camera she spotted inside, she gets surprised by Kazuya's assistant. Unknowingly interfering with the investigation, Mai breaks the camera and Kazuya's assistant gets injured. Kazuya forcefully hires Mai in order to pay for the camera and replace his injured assistant. From that point on, Mai begins to learn about the paranormal world and the profession of ghost hunting.

Having spent Christmas camping with her new friends, Rin Shima embarks on a solo-camping trip to see the New Year sunrise by the sea. All goes according to plan until unforeseen weather blocks the roads back home, making a return trip impossible. Rin, who is now stranded for a few days, is invited by Nadeshiko Kagamihara to stay at her grandmother's house. What is supposed to be a two-day trip becomes an extended period of sightseeing and new experiences for Rin, and she encounters some new and old faces along the way. Yuru Camp△ Season 2 continues the story of Rin, Nadeshiko, and their friends as they further explore the joys of camping.

Satisfied with his investigation of Lala Lai Theatrical Company, Aquamarine Aqua Hoshino shifts his focus from revenge to career growth and becomes a regular on the variety show Dig Deep! Chase the Impawsible. With memories of his mother still lingering in his mind, Aqua cuts contact with Kana Arima, leaving her unable to enjoy the surging popularity of her idol group, B-Komachi. Meanwhile, following the bone-chilling discovery during B-Komachi's recent music video shoot, Aqua's sister, Ruby, resolves to solve the murders of those dearest to her. With the help of another soul still weighed down by Ai Hoshino's untimely demise, Ruby rises through the ranks, using any means necessary to get her way.

Reito Mizuhara is a medical student at the National Advanced Medical School in Tokyo who contracts a rare, lethal disease called cellular sclerosis. In order to be treated, he is put into cryogenic sleep for five years. Upon awakening, he learns that a year into his slumber, a worldwide pandemic broke out, caused by the novel Male Killer (MK) virus which exclusively afflicts males and has killed all other men on Earth. Fortunately, Reito and four other men were spared during their cryosleep and are now immune to the virus. As the only men left in the world, they are thus tasked with mating with as many women as possible to repopulate the planet. However, Reito is committed to his childhood friend and sole love interest, Elisa Tachibana—only to learn that she went missing three years ago. While the other male survivors adapt accordingly to this new world, Reito instead chooses to pursue Elisa, fight never-ending temptation, and investigate this mysterious virus.