Cain and Abel (2016)

Yu Takada (Ryosuke Yamada) works at a company. Since he was a kid, his father has always favored his smarter, older brother. His father doesn't seem to care much about Yu, but Yu craves affection from his father. One day, Yu meets a woman by chance. That experience wasn't that good, but he begins to have feelings for her. Yu then learns she is his older brother's girlfriend.