Soredemo Sekai wa Utsukushii Temporada 1 Episódio 7

One day, out of nowhere, Livis uncle Bardwin (Bard) returns home. Although he once supported Livi as prime minister, Livi shows nothing but resentment towards him. Bard, for his part, also toys with Livi and makes aggressive advances on Nike. What was the real reason for Bards return?