The story is unique and different from other kdramas which is a plus. The cast was great. Loved how their friendship grew naturally. The only thing is that you shouldn't use your brain to watch this, just enjoy the drama.
Good points:-
•Growing friendship through hardships and becoming a team eventually
•Chemistry between cast was great
•Everybody had their specific roles in the team
•Focuses on the teen struggles

Unexplained Points (spoilers):-
•As someone already mentioned in another review
How did Yuna graduate from school of magic and was a phantom hunter but knew nothing about phantoms. She didn't even know how to recognise phantoms until Glow told her, that too after sending her off to Earth and 2 months passed. She didn't know about the characteristics and weakness of any phantom even though she was a phantom hunter which didn't make sense.
•Who released the phantoms?
•Why did Dogyeom want to steal the phantom beads and betray them? What was his purpose?
Ep 8 was totally focused on the fight between the team and Dogyeom, yet they didn't reveal his purpose to hain all the phantom beads.

Overall this drama was fun to watch. And it's short so it's worth giving a try.