The inconsistencies are too much for a 1 year gap.

Changing the actress for Eun Jae aside, her character was drastically changed, as she seemed to be getting more confident and talk about what she dislikes in the first season, this season reset her back to her introverted state.
Although Kang Yi Na only appeared briefly throughout the season, it seems like she grew back her hair and hit on the first boy she met near the house.

I like the change in Jung Ye Eun although I miss her cheerful side.

Hopes up for a better and more consistent season 3, and hope the teaser they released in ep13 gets scrapped.