Notes: Here you are! I tried to match the banner to cover.
Summary: When Shinobu Kocho is made fun of by a group of kids from her school, she is determined to fight any one of them that becomes a demon.
When she found that Katana found in the back of her shed, she didn't know it could be so cruel and evil, but once she used it...
She couldn't stop. She knew if she just injected the poison in that person, they would have an instant death. She needed no techniques, she just thinks about it they're instantly dead.
But just because she's a demon slayer and she's killing demons, it's a cruel way to kill. And honestly, it's not much worse than what a demon does to humans.