You have always had a hard time trying to connect with your family. Since you were a half child of Shiho Nishizumi, she always neglected you and as for your sisters, they were always doing Sensha-do, you asked your mom if you could join but she said no

"No, that's a sport for women only." She always said

After your sister Miho, who was the only one that tried to help you was kicked from the household after she lost a match things got worse and you felt even more lonely, then, your mother proceeded to simply make you go far to study

You always loved tanks and Sensha-do though and you always wanted to join. After some time, you heard that Miho, your sister managed to be accepted again, you headed home to see her again and she was happy, your mom however, still tried to keep you away from the sport, you told your mom you really wanted to join.

She said that you could join only if you defeat your other sister Maho, if you won, she would let you join, if you lost, she would kick you out of the house and forbid to let you see her or your sisters

It was difficult, but if it worked, your dreams could be finally made, you trained hard and did everything possible, on the match however, you lost, and you were eliminated from the Nishizumi family pretty much. You lost everything

You walked in the streets hurt, alone, and with no one to talk with, you headed to a high hill were all the city could be seen and you were about to take a pill and finish it all there when you felt someone touch your shoulder

Hey, Miho said she was forbidden to talk with you so I was sent and.... Woah, hey, you alright? Wait. Is that in your hand a....

It's Yukari Akiyama, your sister Miho's friend, she was sent by Miho since she was forbid by her mom to talk with you