background song from run bts episode 11

I saw this run bts clip in instagram and i heard again the background song when suga appeared as the new transfer student, I really wanted to know the title of that song. I scanned the comment section if anyone mentioned the song, nothing. I googled and good thing there was a reddit post about it, even though it was already deleted it showed in the search results and I finally found out the title and my mind is at peace now. 

Run BTS is like a variety show for BTS and they have their own producer and staffs and writers. In this episode they were going to shoot a school drama. They each had different roles and the one who was to be a girl transfer student was Suga. This is the part where he shows up with the background song i like.

The song is Starlight is Falling by Bye Bye Sea. This is them performing live. There is english lyrics in the live, but if you want to read the english lyrics and hear the studio version of the song, click here.

I don't know why it's titled different in their album Boy's Universe, in spotify, it's called Star Shower.