FUTARI (two people)

WHAT IS "FUTARI" ALL ABOUT:  Sachiko (issei) and Mika (Okina) are two sisters. Sachiko the older one and is a very smart and popular girl at senior high school, and Mika has a very low self esteem. Mika had just passed the exams for the same high school. After  she found out, the family celebrated but Mika got upset because her parents kept saying she passed all because of Sachiko.

Then Sachiko gave Mika a present congratulating her on her exams saying that she never doubted Mika's abilities. It was a hair clip. Mika then felt much better. On the first day of the new term, they went together to school but sachiko forgot something so she went back to get it and Mika waited for her at the park. However, a car went crazy on the road and nearly crashed into another car and then a truck so the stuff (all heavy iron stuff) on the truck fell on sachiko and Mika felt something so she started running towards the accident site. When Mika reached sachiko was still alive and she told mika to look after her parents, and believe in herself, then more stuff fell and sachiko pushed mika away in time so she was hit again and died. Mika was asked to play the piano for her class's singing in the coming up school performance and she was very worried. There's also this girl who is the rival of sachiko who doesn't like mika. One night, she was going home from school and chose another route to avoid the place where the accident occurred and she was attacked by a guy but managed to get away because she heard Sachiko's voice. Later, her ghost showed Mika a message on the internet from a guy (played by Ryuichi from Luna Sea) who is having a boxing match the next day which sachiko had promised to go to so Mika goes for her and told him that sachiko is dead. On Mika's birthday, she was singing happy birthday to herself when she heard sachiko's voice singing...