Tanım
•that which can warm one's heart, calm one's mind and provide comfort in times of sadness
Etimoloji
From 癒(いや)し (iyashi, “soothing, calming, healing”, the 連用形 (ren'yōkei, “continuative or stem form”) of verb 癒す (iyasu)) + 系(けい) (-kei, “type, family”).