High & Low The Red Rain (2016)

Masaki and Hiroto Amamiya have spent a year searching for their missing brother, Takeru, after the tragic loss of their parents in childhood. On the anniversary of their parents' death, hope is high that Takeru will finally return. Instead, they encounter someone who possesses information about his fate. As the brothers navigate their grief and the bond that holds them together, they face new challenges and revelations, propelling them deeper into the mystery of Takeru's disappearance and testing their loyalty to one another.