Datte Watashi wa Warukunai

The story centers on Hino Mari, a 32-year-old apparel shop worker. Her catchphrase is "It's not my fault," and when she spills coffee on someone on a rush-hour commuter train, she blames them, saying, "You're the one who invaded my personal space," and "You sensed I might get caught, but you didn't move away. That's poor crisis management." Then, at her workplace, Kurata Aoi, a self-blaming woman, appears, always thinking she's to blame whenever trouble arises. Mari, who sees Aoi as her enemy, tries to control her position by believing she's the victim no matter what happens at work, but...

(Source: Natalie, translated)