This paper shows clearly that Buddhistic welfare activities are due to the fundamental thought of Kyosei. We had a new appreciation of a life-and-death transience according to the East Japan catastrophic disaster of 2011.3.11. The dead are not in a world now. However, we are alive with the dead. There are the three worlds of a past, the present, and future, and following one time-axis. It is important for us to recollect past quarters, to wish the welfare of quarters of the future, and to act. This is life-and-death Kyosei. The axiom of the Kyosei in Buddhism is a luck view. Four Institutes of Shitennoji temple told that Prince Shotoku founded was built based on the Fukuden thought, and became the model of growth of Buddhist welfare. The Fukuden thought is stacking good behavior in the present, and I am not that of“carrying out”and“I am allowed to carry out”a good behavior for others.“Zenkon-Yado”and“O-Settai ” entertainment to a pilgrim are the examples.