Original text: 初心（しょしん）：最初に持っている気持ちや信念。最初に心に抱く気持ち。 Translation: 初心 (shoshin): The feelings or beliefs that one initially holds. The feelings first embraced in the heart.

First time hearing: Information or stories heard for the first time. Hearing something unknown for the first time.

Original text: 初志（しょし）：最初に持った志や決意。最初に抱いた志や目標。 Translation: Initial aspiration: The ambition or determination first held. The goals or objectives first embraced.

Elementary: Basic stage or basic content. Basic part that should be learned first.

Lava (yōgan): Refers to the hot rock that erupts from a volcano. It is the solidified form of magma that has reached the Earth's surface.

Translation: Dissolution: The process in which a solid dissolves in a liquid. The act of a substance dissolving.

Welding: The process of heating and melting metals to join them together. A technique of joining metals by melting them and connecting them.