If you enjoyed the male lead Yang Yang, the computer game aspect, and the strong friendships of Love O2O then you should really watch The King's Avatar. Yang Yang plays the male lead of this drama, and they are similar although not exactly the same. The gaming aspect, which was a huge part of Love O2O, is also a huge part of The King's Avatar. And of course, there are so many strong, healthy friendships in The King's Avatar just as there are in Love O2O. Of all the shows I've watched so far, I think The King's Avatar is the most similar in vibe.