Saiko no Seito: Yomei Ichinen no Last Dance

Hikari Ban has a genetic disease and has been given a year to live. Determined to make the most of the time he has left, he decides to bid farewell to everyone while secretly jotting down his aspirations in a notebook. Hikari's goal is to transform the remaining time into a remarkable journey, striving to turn each day into his best day ever. Consequently, those around him affectionately refer to him as the "Positive Monster." Hikari's penchant for undertaking audacious endeavors and embracing eccentricities not only attracts people to him but also inexplicably captivates everyone. Amidst his endeavors, Hikari finds himself entangled in an inexplicable bond with Fujiwara Taishi, a student from Class 3D, whom he deeply admires and loves. (Source: Japanese = NTV || Translation = MyDramaList)