After leaving Canada to move in with Haru, Rei was finally getting used to living as the youngest of four brothers, and Haru's new café was beginning to thrive... when their mother, Haruko, showed up and said she was taking Rei with her to Switzerland! The shock of her sudden declaration just when Haru and Rei had begun to grow closer led to increasing discord between them. Is more trouble on the horizon?!

(Source: Crunchyroll)