![1boy 1girl comic eating emiya_kiritsugu fainting fate/zero fate_(series) food highres hisau_maiya kirino_moegi long_image mapo_doufu parody tall_image translation_request rating:s score:1 post #1040168](/cdn_image/preview/62/39/6239af1808e245385f160b93975d5af6.jpg)
Characters becoming unconcious and collapsing due to shock, asphyxiation, blood loss, etc.
The medical term is Syncope, which strictly refers to the brain not getting enough blood and temporarily shutting down, recovering in a few second when it gets enough blood.
For danbooru however, fainting refers to merely to the act of becoming limp and collapsing.
Also applies to a character that has fainted, though not to be confused with sleeping.