In manga and anime, sometimes a character's soul comes out of their mouth, as if they had just died and were about to go to heaven. This expression is used when a character figuratively dies of something, like dies of shame, or dies of shock, or dies of exhaustion, dies inside, and so on.
- tamashii ga kuchi kara deru
[Someone's] soul leaves of [their] mouth.
- kuchi kara tamashii ga nukeru
From [someone's] mouth [their] soul comes out. (in the sense of being cut loose, separated, extracted.)
Anime: Blend S, ブレンド・S (Episode 5)