Tegami Bachi, Volume 3 (Tegami Bachi #8-10)

Suede Lag almost breaks the record time on his Letter Bee test, securing a job as a Letter Bee! But his celebration ends with unwelcome news: the record holder, Gauche Suede, is no longer a Letter Bee! Shocked, Lag seeks out Gauche's little sister Sylvette to learn exactly what happened. But Sylvette has no answers, only memories and a broken heart. Gauche would never abandon his sister like that! Could it be he lost his heart... or his life?!