noun
one's future; what lies ahead
Refers to the future course of one's life, often with a sense of uncertainty or concern. Commonly used in expressions like おいさき短い (one's remaining life is short) or おいさき真っ暗 (the future looks dark).
こんなに若くして病気になるなんて、おいさきが思いやられる。
Getting sick at such a young age, I worry about what the future holds.
生い先の長い若者に重労働は避けさせたい。
I want young people with long futures ahead to avoid such heavy labor.