ココロ

A cheerful girl who isn’t timid of coming into contact with anyone.
She died on her 17th birthday, and came to the Underworld.
After that, she was invited to the Reaper training school and aims to be one.
Though no matter what she does doesn’t work out, with her inborn brightness, she spends everyday earnestly.
In this world, all detailed memories are vague, even she herself often doesn’t know why