同窓会
Said in 7 Japanese podcast lines.
同窓会は同じ学校やクラスにいた人たちが集まるイベントです。
A reunion is an event where people who were in the same school or class gather.

Nihongo First Class: Japanese Language Mastery for Beginners & BeyondFurisode for a Million Yen?! Exploring the Traditions of Japan's Coming of Age Ceremony (Seijin-shiki)|成人の日
後から聞いたらバイト仲間の同窓会みたいなのがあって
Later, I heard that there was something like a reunion for my part-time job colleagues.

しあわせの黄色いスキャンティー#30 遅ればせながらあけましておめでとう
僕はこの間成人式終わりで高校の同窓会に行ったのですが、当時から少し気になっていた女子に話しかけられたことです。
I recently went to my high school reunion after my coming-of-age ceremony, and I was spoken to by a girl I had been a bit interested in since then.

TBSラジオ「ねむチキ」#168「ドラゴンボールを読んできた汁男優」竹内有紀
大抵成人式の後には同窓会が開かれます
Usually, a reunion is held after the coming-of-age ceremony.

Nihongo First Class: Japanese Language Mastery for Beginners & BeyondFurisode for a Million Yen?! Exploring the Traditions of Japan's Coming of Age Ceremony (Seijin-shiki)|成人の日
芸工の大学での同窓会のイベントで
At the alumni event at the art and design university.

あべけん×UKの泥棒会議#78『壮年カンパニー』〜いつのまにか、ココロも満タンに
同窓会で昔の友達に会えるのはとてもいいですよね。
It's great to be able to see old friends at a reunion, isn't it?

Nihongo First Class: Japanese Language Mastery for Beginners & BeyondFurisode for a Million Yen?! Exploring the Traditions of Japan's Coming of Age Ceremony (Seijin-shiki)|成人の日
成人式の後は中学生の時の同窓会がありました
After the coming-of-age ceremony, there was a reunion for my middle school classmates.

Nihongo First Class: Japanese Language Mastery for Beginners & BeyondFurisode for a Million Yen?! Exploring the Traditions of Japan's Coming of Age Ceremony (Seijin-shiki)|成人の日
The shows belong to their publishers, and each line plays from the publisher’s own file. Translations are machine-made. Japanese books and courses on Amazon (affiliate link).