The drama that this is taking the spot of always has 50 episodes since it’s a long weekend drama.
The weekend KBS2 Sat-Sunday 9pm dramas are always 50 episodes long. And they often have a slow burning plot so if you really are interested in this watch it after this ends lol As someone who has been watching these dramas for years here's what I do - watch the first few episodes and sometimes they're enough to tell you the trajectory of the drama cuz often times if it has a bad start, it'll almost NEVER improve.
My green flags of choice are Seo Gongmyung (played by Park Sung Hoon in Into the Ring opposite Nana) and Suganami Kotaro (played by Kentaro Sakaguchi in Okaeri Mone).
/s
Check the Okaeri Mone links.