Pierce Hole

Shuuko, an office worker, has recently been treated coldly by her boyfriend Makoto, who works in the same company, saying that he is busy, so she decides to get her ears pierced to spite him. However, shortly after that, her coworker Yukari, who had her ears pierced before Shuuko, gets into a traffic accident, and Shuuko can't help but feel uneasy when she sees her coworker Yukari, who had her ears pierced before Shuuko, lament that the piercing had changed her "luck"... (Source: Hakusensha, translated)