Sleepless Society will be a 4-part series with the following cast:
Part 1 - Ploy Chermarn/ Mild Mac
Part 2 - Pinky Savika/ Chakrit Yamnarm
Part 3 - Aokbab Chutimon
Part 4 - Bee Namthip
Here's the released trailer for the first two parts titled "Nyctophobia" and "Bedtime Wishes." The first part will begin airing May 8, 2019.
FYI "Nyctophobia is an extreme fear of night or darkness that can cause intense symptoms of anxiety and depression."