Please, please help my find this manga ╥﹏╥

So I remember reading this manga awhile ago
I forgot the title but I remember it's a name of a flower..
It's a phsycological/tragedy
Story goes:
Where this girl moves back with her family to the country
Gets bullied eventually kids burn her house as a prank but things go wrong
Both her parents die while protecting her little sister
Her sister is badly burnt and critical
So she decides to avenge them

-Spoiler here-
She kills hem all or karma gets them
And the one classmate she thought was decent, took pictures of her sister while being burnt
And I don't remember if she's alive at the end or not

I can't find it （/TДT)/