Sending a text message with 送信

Kanji Explanation: Sending and escorting with 送

Hiroto is having dinner with his friend Hideki. After Hideki reveals that his wife is going to have a baby, he looks down at his phone and sees a text message he needs to respond to.

ヒデキ:: 「ホイ　送信(そうしん)。」; “And...sent.”
ヒロト:: 「スゴイなぁ　ヒデキ。」; “You're amazing, Hideki.”

送信(そうしん) is typically used for electronic transmissions, such as the text message sent here.

Key Points

1送信(そうしん) = sending something electronically

Here 送信(そうしん) means sending a digital message, so the line is the moment he taps send on his text.

2ホイ is a casual little “there / okay / done”

ホイ is a light conversational interjection that makes the action feel quick and effortless, like “there we go”.

3送信(そうしん) is the noun, with する understood

On its own, 送信(そうしん) is a noun meaning “sending / transmission” but in clipped casual speech it can stand in for 送信(そうしん)する or 送信(そうしん)した.

4Reply line: スゴイなぁ sounds warm and impressed

スゴイなぁ is not formal praise; it sounds like a relaxed, heartfelt “Wow, that’s amazing”.
The drawn-out なぁ gives the reaction a soft, admiring tone.