さいしょ最初saisho
1.
The point in time or sequence when something begins, often associated with the initial occurrence or stage of an event or process.
2.
The earliest phase or introduction of an experience, emphasizing the importance of starting correctly for future outcomes.
3.
The foremost position in a sequential arrangement, signifying precedence over others in order or timing.
Example:
その考えは最初のうちはばかげているように思えた。