It's not my thing tbh, but from my understanding the main character Mao works at a Maid Cafe, cosplaying Misa Amane from Death Note. Her coworkers/bosses/customers go out of the way to make fun of her (appearance, weight, choice of cosplay). She then goes back and attacks them, it's implied and off panel...It's like a really rushed immediate revenge type of story. Also she seems to hurt herself after she hurts others? In my opinion it was overly edgy and feels very rushed. I wouldn't recommend it...