に なる

become

→ に
phrase Rare #37,617
become Used to express a change into a new state, condition, role, or result. In the pattern ことになる, it can mean that something will be decided or will end up happening.
JA: 将来、医者に なるつもりです。
EN: I intend to become a doctor in the future.

それで自己正当化になるのかな

Does that really justify what you did?

— 帰ってきたヒトラー (2015)

すばらしい満月の夜になるでしょう

It will be a wonderful full-moon night.

— 魔女の宅急便 (1989)

彼らを殺すになるかもしれないんだぞ

You realize this could end up getting them killed, right?

— オデッセイ (2015)

ギターが好きでロックスターになる言ってた

He loved guitars and said he was going to become a rock star.

— 嵐の中で (2018)