Them and Tan, both of them stands out with their art style so much. (Remember to support this author on official site even if you just unlock the wuf and like the chapters).
When you read this kind of story, the rule of thumb is that you can separate fiction from reality otherwise don't read it at all or whine about it. Cheers.
P.S: Damn the author's art style really improved in checkmate but this one is still so good how they draw the eyes.
The personality switch is so sad, I wish we can get to know more of the past.