Un caso incurable de amor

Nanase Sakura, a high schooler who is on a school trip, sees an elderly woman lose consciousness and collapse. Nanase is sent into a panic, but the woman regains consciousness with the help of Kairi Tendo, a doctor who happened to pass by. Nanase falls in love with Tendo after seeing his quick response and decides to become a nurse with the hope of meeting him one day. Five years pass and Nanase is officially a nurse and decides to work at Hiura General Hospital, where the doctor she longs for also works. Nanase confesses her love to Tendo as soon as they reunite, but he does not remember their encounter five years prior and gives her a harsh rejection. Nanase is assigned to train at the cardiology department where Tendo works and attempts to show her abilities.

５年振りに再会した天堂(佐藤健)が偶然にも隣の部屋に住んでいることが分かり、有頂天になる七瀬(上白石萌音)。しかしその直後、謎の美女・流子(香里奈)と一緒に住んでいると知り、七瀬は落胆。さらには、流子から強引に２人の“愛の巣？”に招かれることに…！？初めて天堂のプライベートな姿を垣間見て淡い妄想を膨らませる七瀬だが、天堂からは「うちの科にくるなら手加減しない」と一喝されてしまう。そんな中、循環器内科に正式配属された七瀬は、天堂の下に付くことに。一方、急な不整脈で入院中の家電量販店の従業員・神田光喜(金子大地)の緊急オペが決まる。オペの不安からか食欲不振になった神田に対し、天堂は投薬療法を見直し、食欲増進を図ろうとする。そんな中七瀬は、院内で開催するスペシャルイベントに神田を誘おうと思いつく。七瀬の優しい気遣いに、食欲と前向きな気持ちを取り戻した神田は、退院後に七瀬へオススメの炊飯器を紹介することを約束する。笑顔を取り戻した神田の表情に安心する七瀬だったが、オペの前に神田の容態が再び急変し…。

Koichi Kisugi comes to see Nanase after hearing she collapsed, while Tendo comes to Nanase’s room to retrieve the bag he forgot. The two run into each other, upsetting Nanase. Kisugi urges Tendo to go home and insists he can look after Nanase, but Tendo and Nanase somehow end up spending the night in the same room. Tendo is gone when Nanase wakes up the following day, and Tendo’s strict guidance at the hospital continues as usual. Nanase, who is good at needlework, continues to fail at giving injections. She yearns to be recognized as a fully-fledged nurse and uses Kisugi to practice her injections. Meanwhile, she learns that Tendo had a lover during his residency and asks Kisugi. Ryusei Nishi reunites at the hospital with Ryuko, who he fell in love with at first sight.

Nanase has gotten used to working in the cardiology department. However, as soon as a patient is discharged, another patient, Keiko, is admitted due to heart failure. Nanase is depressed as she is unable to properly respond to this unfamiliar emergency, but then she finds an encouraging note at her desk. Nanase assumes Kisugi wrote it, but he claims it is not him. After another note is found in Nanase’s mailbox, Ryuko suggests a stalker may have written them and is worried for Nanase’s well-being. Tendo shows no sign of concern, while Kisugi volunteers to be her bodyguard. Meanwhile, Keiko is set to undergo surgery for her heart failure, but she refuses to have an operation. This confuses Nanase, but she learns that Keiko wants to attend her daughter’s upcoming wedding.

Nanase's stalker is a former inpatient named Shin Tazawa. Tendo confronts the stalker, but Nanase is injured and gets transported by ambulance. Before losing consciousness, Nanase makes a heartfelt confession about her wish to date and kiss Tendo, who cries out to Nanase and promises to grant any of her wishes if she lives. This includes becoming her boyfriend. Tendo does not want to mix his work and private life together and tells Nanase to keep this a secret. Meanwhile, Shinji, the eldest son of the head nurse in the cardiology department, is admitted for arrhythmia. Nanase is around the same age as him and hopes to relieve his anxiety by volunteering to assist in his ablation therapy. However, the head nurse knows Nanase is inexperienced and asks to remove her from the team.

At the cardiology nurses’ station, Tendo asks for Nanase’s schedule to be left open. When asked about why, he declares that it is because she is his girlfriend, and he wants to eat meals with her. His words surprise and delight Nanase, Kisugi, and their colleagues. But then comes Miori Wakabayashi, a strikingly similar look-alike of Tendo’s deceased lover, Minori Wakabayashi. Tendo and Kisugi are at a loss for words. Also, Tendo is suddenly asked to attend a seminar in Osaka, the same day as when he was to spend a day off with Nanase. Miori will also attend the seminar, and Nanase decides to follow Tendo to Osaka out of concern. Back at the cardiology department, Yuika Sakai is helping a patient named Wada, whose condition takes a sudden turn.