何しに来たの

what did you come for?

→ 何
phrase Rare #30,200
what did you come for? A casual way to ask someone why they came or what they came to do. The ending can change with tone or context.
JA: 今日は何しに来たの?
EN: What did you come here for today?

じゃあ何しに来たの?

Then what did you come here for?

— ロシアン・ブラザー (1997)

何しに来たのよ

What did you come here for?

— いまを生きる (1989)

宇宙人は何しに来たの?

What did the aliens come here for?

— Cosmic Princess Kaguya! (2026)

少年さ東京に何しに来たの?

Hey, kid, what brings you to Tokyo?

— 天気の子 (2019)

何しに来たの?

What did you come here for?

— ビッグ・シック ぼくたちの大いなる目ざめ (2017)