Ohh, mee too!!! It sounds really cute
Playfull Kiss - Lee Tae Sung (Second lead) has a Busan accent.
Love Rain - Seo In Guk has a Busan accent (I think)
King of Baking - Min Sun and her kid have the accent (I'm still in ep 2 so not sure if it continues)
Can't think of anything else. I'm sure I've heard main leads, other than in Reply 1997, have the accent