SEE ALSO: 'Reply 1997's unforgettable cast to make special cameos on upcoming episode of 'Reply 1994'

Seo In Guk, A Pink's Eunji, INFINITE's Hoya, Shin So Yul, and Lee Si Un returned to their 'Reply' roots in a hilarious bus scene where the students cross paths with Jung Woo. Eunji is also spotted on TV in both years as a passionate H.O.T fan.

Seo In Guk tweeted, "Long time no see 'Reply'!! It is a nostalgic production to me. It feels like I visited my hometown for a bit hehe," along with the 'Reply 1997' reunion snapshot below. 

Check out the characters you missed in the cameo clip!