This story was very unique. I will not make very long review but the overall concept revolve around
1. Society was afraid to live in a new change.
2. People were afraid to be be abandoned and unloved

The reality was humans were afraid of being a monster. But they were also afraid of being alone. The sweet home family on the other hand understood very early that monsters can behave like humans if they can overcome their fears. Sadly it took forever for the whole world to actually understand this. At the end they embrace neo humans and avoid being monsters.

I really liked eun hyuk character like from the start he was trying to do the good things but everyone ultimately called him a heartless person. Even at the end he wanted to sacrifice himself instead of hyun su. I think it since all of them were young they were good at expressing themselves. And eun hyuk was caught up in all of this. Admit it or not it was his words who kept everyone alive.

Btw the bus scene really showed bl vibes like the fight, bickering but still sitting so close to each other.