She was my dearest woman.
But she no longer lives in this world...
It is because...I am the one who killed her...

She was born as an only child of an ordinary family.
But she had health issues since her birth,
which made it difficult for her to even go out.
Not only because of the health condition, but being an only daughter,
she grew up with the fullest attention and affection of her parents.

And one day, she had fallen in love.
The person she had fallen in love was a man who worked part-time at the bookstore she often made a trip to.
She had never expected such a twist of fate as everyone else.
They slowly developed affection to each other and eventually realized that they were the love of their lives. But they had to face the strong opposition of her parents.
It was unbearable for her parents that their daughter had gone out with someone who only had a part-time job, especially considering her health issues.
Her parents had become desperate to change her mind.

...No, the truth is...I was born in exchange of her life.

Today is my birthday. And...it is also the day my mother had passed away.
My father showed me a picture of my mother when she was young.
After dating for three years, she conceived me.
Although the obstetrician warned her of a high risk of losing her own life at delivery,
she didn't even have second thought and immediately decided to give a birth.

Thus, she had me and...lost her life.

I asked my father if I was the one who killed my own mother,
"No, she gave her life to you."
This is what my father, who has become the owner of the bookstore, and my grandparents who are now close to my father, told me with smile.