Guardian = Master's body-guard? Both mental and physical?
Guardian = Always stand by the side of my master?
Guardian = Does everything the master told me to?
Guardian = Guarding my master away from every single, no matter how trivial, danger?
Guardian = Feels everything same as the master feel?

守謢者真的要完全地守謢嗎？
守護者真的要像現代的父母，看見兒女跌了一跤就要高聲尖叫嗎？
守護者真的要無時無刻的守護著，不容許master犯一小個錯，要剝奪master learn from mistakes的機會嗎？

說到底，我真的配做一個天使的守護者嗎？

Even parents do not necessarily do everything to protect the children just for the sake of protecting them, shouldn't a guardian ask oneself again whether I, as a guardian, should protect my master at all times?