both male and female leads had a crush on another person and helped each other to be closer to the one they love. they slowly fall in love together without even noticing it.

Both have a main character who likes the GO game. It contains many lessons and wisdom based on the rules and spirit of GO. so inspiring and has great main lead character growth. actually, if you watched the two of them you can feel it's like two different dimensions but relatable! for example, if "Jang Geu Rae" met someone like "Chu Ying" or "Yu Liang" he would never stop playing GO. so it's like "Shi Guang" is the future "Jang Geu Rae" in a different dimension!