Pretty melancholic visual novel vibe with the soundtrack and rain and the sad red balloon (nice string physics!). The character vaguely reminds me of "Six" from "Little Nightmares", though I got confused that all the friends/adults are all tall scary looking monsters. Maybe the other kids should be small scary monsters? :)
At the start I sometimes got lost when going too far left or right. It _seemed_ like the balloon bounced in the direction of where to go (at least, following it helped keep me on track).
Unlike Jan, I think the story could go on a little longer. The growing sense of dread let me anticipate what was coming, but perhaps some other scenes following that would help close out the story.
Nice job though!