Takasugi Harumi is a 31-year-old man. Even though he has a college degree, he is unable to find a job. One day Miya, Harumi's aunt who is like a sister to him, suddenly dies. Harumi's 12-year-old daughter, Kururi, has no one to rely on now that her mother is dead. Harumi has to take care of Kururi now but her heart is kept closed."Obentou," a lunch box, gives them a reason to get closer to each other. Each lunch box has its feelings, love and heart in it.