One afternoon in a quiet downtown neighborhood, university student Murakami comes across an unusual sight in his local park: a genuine, white-scaled dragon sitting with a cardboard sign reading “Please look after me.” The dragon’s name is Ilsera, and she hails from another world. After failing a magic examination required to become a fully fledged dragon, her parents sent her to the human realm to train and improve her skills—but she has no place to stay and no means of support. Murakami initially tries to walk away, but when a giant slime attacks him on his way home, Ilsera rescues him, and he feels indebted enough to let her move into his cramped six‑tatami apartment. Ilsera insists on remaining in her natural dragon form rather than adopting a human disguise, which leads to constant comedic chaos as she struggles with everyday tasks: she knocks over furniture, cannot handle small dishes, and fills the tiny room with her bulk. Despite her high pride and occasional laziness, she is endearingly incompetent at domestic life, and Murakami serves as the straight‑man caretaker, gently exasperated but never truly angry.

The setting is the old-fashioned Tatsumi‑chō shopping district, a close-knit community where residents gradually accept the enormous dragon as a quirky part of daily life. Ilsera finds part‑time work using her fire‑breath to grill rice balls, participates in local festivals, and befriends the neighborhood land deity Arashiaki. Over the course of the story, the seasons change and new characters arrive. In the summer festival arc, a sudden storm threatens the town, and Ilsera and Murakami must confront the local dragon god to protect their home. In the autumn arc, Ilsera’s half‑brother Zaraak appears and kidnaps Murakami, prompting a confrontation that reveals tensions within Ilsera’s family. The fourth volume deepens the bond between the pair when a petty argument leads to Ilsera running away, only to be captured by a sentient slime that holds a grudge against her; Murakami has to rescue her while also dealing with Zaraak’s interference. The fifth volume brings a winter visit to Murakami’s rural family home, where he must explain his unconventional living arrangement and his ambitions as a film student, while Ilsera and her dragon relatives create a boisterous New Year’s celebration.

Throughout these episodes, the central conflict remains low‑stakes and warm: a human and a dragon learning to coexist, with Ilsera’s training progressing in small, everyday ways and Murakami slowly finding his own direction. The manga balances gentle humor with moments of genuine affection, and its refusal to humanize the dragon makes the premise feel fresh and grounded. The ongoing narrative emphasizes growth through mundane experience, the value of found family, and the quiet charm of a shared six‑tatami space.