Jirai Kei (地雷系), meaning "landmine-type", is a
Japanese slang term used in a derogatory manner to label someone as "ticking time bomb". Just like with a real landmine, they are not recognisable as such until making a wrong step that's triggering an explosion.
Below, the main characteristics of a landmine-type:
- emotional instability
- attention seeker
- easily triggered
- manipulative
- obsessive
Since
2020, the term has also become the name of a stereotype and character trope along the lines of "yandere", which attributes the previously mentioned traits to girls who wear
dark alternative fashion styles.