Hina Tsurugi and her family have just moved to a quaint seaside town. Hoping to savor the sight of the peaceful ocean, Hina stumbles upon a girl named Yuuki Kuroiwa—an upperclassman at her new school—who invites Hina to join her in fishing. Hina reels in an octopus, which falls onto her; being afraid of bugs and big creatures, she panics and begs Yuuki to remove it from her. Yuuki sees this as an opportunity to force Hina to join the school's Breakwater Club—a club where members gather, catch, and eat various types of marine life as their main activity. Although her attempts to refuse to join fail, Hina slowly begins to discover the hidden joy in fishing. Her view on the sport changes, now looking forward to all the delightful experiences she can take part in alongside her fellow club members.

Ototo On their way home from school, the Pastime Club encounters Hanako Honda's younger brother, Kentarou. The timid yet studious boy introduces himself to Hanako's friends but quickly attempts to leave the awkward situation. However, he is roped into joining the three girls to have some fun at the park. Amusutorongu Chisato Higuchi's spontaneous question of which Pastime Club member is the strongest leads to a fierce arm-wrestling contest—spurred further by some underhanded methods.

The Nocturnal Community Relations Division is a team of people who specialize in solving cases involving the ominous occult creatures of the night unseen by ordinary humans. Young and unsuspecting Arata Miyako has been assigned to the Shinjuku Ward Office of the division, where he meets his fellow members Theo Himezuka and Kyouichi Sakaki. On his first night, Arata finds himself on a mission where he discovers to his surprise that not only does every supernatural creature he once thought to be fictional actually exist, but also that he is the only human who can understand their non-human speech. Arata's surprises do not end there, as later that night, he meets a legendary creature called a Tengu that refers to him as the famous Heian-era exorcist, Abe no Seimei. Unfamiliar with the exorcist, Arata pays no mind and continues to work with his team, utilizing his unique ability to assist in the resolution of their cases. Mistaken by many occult creatures as Abe no Seimei and quickly becoming notorious for his special ability during his work, Arata becomes curious of his origins and invests himself more into solving cases regarding occult creatures he encounters once he learns of a certain connection between himself and the exorcist. However, Arata will quickly find that dealing with supernatural creatures is not as simple as he thought, as danger begins to play a fundamental role in his everyday findings and his ability starts to present an unexpected issue.

Tuğrul Mahmut is a young pasha serving on the Divan of the Türkiye Stratocracy. The clouds of war are gathering over his country due to the threat of an aggressive Empire. With the Divan split between warmongers and the pacifists, Mahmut begins his quest to keep the peace at any cost. As he finds himself deeper and deeper in the politics of the ancient world, new enemies and allies surface. Who will prevail? What will Mahmut do if war proves to be inevitable?