Part Names (Patreon)

What should I call the names of the different seasons/chapters of Lunar's Chosen? Personally I'm leaning towards Episode as the subheading.

For example:

Lunar's Chosen - Episode 1

Lunar's Chosen - Episode 2

or

Lunar's Chosen - Chapter 1 

Lunar's Chosen - Chapter 2

or

Lunar's Chosen - Season 1

Lunar's Chosen - Season 2

or 

Lunar's Chosen - Part 1

Lunar's Chosen - Part 2