The End of the World.

Maria is in need of money. Because her day-time job doesn't pay enough, she works at night at a cabaret. She needs the money so that she can pay for her sister, Nana's eyes operation. When both Maria and Nana were younger, Maria burned down the home, causing her sister's blindness and killing their father (mother survived.) Shiro is a famous concert pianist. However, he isn't happy with his marriage or his life in general. Maria and Shiro are united through a traffic accident, causing Shiro to be hospitalized. Faking amnesia and his identity, he stays at Maria's place and eventually starts to work at the cabaret as a piano player. As you will find out later on, life was not meant for Maria and Shiro to find one another.