In the same class since preschool with 連続
Kanji Explanation: Continuation and connection with 続

With the new school year, Takeo and Sunakawa are in the same class again. Takeo tells his girlfriend, Yamato, about it.
- 大和:
- 「えー 14年
( 連続( 同( じクラスなんだー!!」- “Wow, you've been in the same class together for 14 years in a row!!”
Key Points
14年
( 連続( = “14 years in a row”Here 連続
( means the same result kept happening without interruption across school years.14年
( 連続( is a compact way to say “for 14 straight years” or “14 years in a row”.
What is being repeated: 同
( じクラスThe repeated event is 同
( じクラス, meaning they keep ending up in the same class each year.The sentence packs this tightly: 14年
( 連続( 同( じクラス = “the same class for 14 straight years”.
Implied で
A fuller paraphrase would be 14年
( 連続( で 同( じクラスなんだ.Japanese often omits pieces that are easy to infer, especially in excited speech like this.