I agree with your idea or opinion
あなたの意見に賛成です (anata no iken ni sansei desu)
"I’m with you on that plan — it’s a good one."
"その計画に賛成です——いい計画ですね。" (sono keikaku ni sansei desu ii keikaku desu ne)
to get to the point quickly
to have and use power or influence effectively
to reveal a secret accidentally
to change one’s approach or activity
survival of the strongest; lack of order or law
to develop romantic feelings for someone