Kouta, a college student, relocates to his family house where his brother Tetsurou resides. Tetsurou revisits from Tokyo to support Kouta while their parents carry on with their overseas work. Kouta feels uneasy being around Tetsurou as they haven't met for six years and are not familiar with each other. As Kouta unravels mysteries about Tetsurou, he notices the obscure emotions he experiences towards him, which amplifies their uneasy relationship.