Fighting Spirit
noun
とうし
投資 (とうし) Investment
凍死 (とうし) Freeze To Death
闘志 (とうし) Fighting Spirit
闘士 (とうし、not on WK) Fighter (for), Militant, Champion (of), Boxer
If you Invest 投資 recklessly you'll Freeze To Death 凍死 unless you have a Fighting Spirit 闘志
Tokyo とう sheep し must have a Fighting Spirit to survive in the city.