1) Russian boy name 
Yasha (Russian: Яша) is a Russian male name. ″Yasha″ also means demon in Japanese. A similar name, Yashar, is also used by Iranian Turks/Azerbaijanis (Persian: یاشا) as a male name; in those languages the word Yasha means `to live` and the name Yashar means `to live forever.` Yasha may also refer to: ...[manga] ==Reception== It won the 47th Shogakukan Manga Award for shōjo manga. Eve no Nemuri was nominated for the 10th Tezuka Osamu Cultural Prize. ...
In Japanese mythology, Yasha is a vampire-bat, said to be the spirit of a woman whose anger lowered her status in rebirth.