ひがいもうそう

被害妄想

Delusion of persecution

自分以外の人や組織などから被害を受けたり、他の人が自分について悪く言っていると信じてしまうこと。

This is where a person believes that the people or organizations around them are harming him/her, and/or that other people are saying bad things about him/her.