Realize

実現する

jitsugen suru

(to convert (something imaginary or planned) into reality; to make real)

悟る

satoru

((''transitive'') to become aware of or understand (a fact or situation); (''intransitive'') to become aware of or understand a fact or situation)

気付く

kizuku

((''transitive'') to become aware of or understand (a fact or situation); (''intransitive'') to become aware of or understand a fact or situation)