I'm a big fan of stories about competition, sports, character development, teamwork, and friendship. I have read and watched many manga, anime, and drama with this kind of story. But I haven't read the manga or watched the anime from this drama, so this is my opinion based solely on the drama. So, I will give an honest review!

for the first 20 episodes, I LOVE IT SO MUCH that it even made me think: "This drama isn't real, this drama is too good. only a few episodes left, I don't want it to end!." and im sure i will give 9/10 for this drama. until...
from episode 25 onwards the story bore me a little (note, I really like dramas about competition), especially episodes 30-34, I really hated how the story went.
And for the ending, I just gave an "OK" rating. I swear it ended pretty well, but it's still way below my expectations of how the story should end.

WHAT I LIKE:
1. Character development.
Not only do the main players develop their characters, his friends also develop their characters.
2. The match makes me excited.
The first 20 episodes, each match really excited me. how the main player returns to playing Go, how he competes at the school level, how to get into Go school, and grading.
3. Their friendship.
The friendship here is more realistic, why? the fact is that friends will always change at every level of our lives, not from beginning to end with the same friends (most of drama is like this). even though the friends on our side change, but once friends are still friends and how they still support each other. I really like how they all got along with the main character.
4. Hong He's character!
My favorite character here is Hong He! he is the definition of BEST friend. His character is very beautiful, he is sincere about friendship, Go, even knows the most important priorities in his life. His character is a supporting character that I can like more than the main character, he is the second character who can make me feel this way after Li Sa from drama Our Shiny Days.

WHAT I DONT LIKE: ( no 2 minor spoiler)
1. Unnecessary scene.
at most in episode 25 onwards. especially some bromance scenes that annoyed me a little because they didn't feel necessary.
2. Chuying's character.
okay I know the main characters here are Shi Guang and Chu Ying (+ Yu Liang). I dont hate his character, but i also cant like his character either. And sometimes I feel no need for ChuYing's presence lol I know this is stupid because he is the biggest reason Shi Guang started playing Go and how he can keep playing. But sometimes I feel Chuying's character annoys me a little, even I wonder if this story is better without his character. what if ShiGuang liked Go because of himself, what if ShiGuang could have the skills to play Go by studying alone or learning from the masters he met. It would be better because he would not be depressed for about 3 episodes due to Chuying's missing presence and I really hate this for being the cause of ShiGuang's depression and the biggest problem in this drama.

okay overall I like this drama, but still I feel this drama could be much better!
For those of you who are looking for a similar story (without ghost lol), I would suggest Chihayafuru! this is one of my all time favorites, there are manga, anime, even live action / movies. And I'm going to suggest two of my favorite Chinese dramas, The Princes of Tennis and The Kings Avatar.