Let's pull up the rating up first. First chapter, MC got 99999 treasure chests. Even if MC open it once a day, it's 273+ years. *facepalm* Rate: 4 (minus 1) because of unnecessary relation with sister dong. I give up at chapter 124. Final Rating is 3.
Author rewrite chapter 2 until chapter 9, that's why chapter 10 is written very differently from chapter 9. Look at another site if you confused. The interaction between the characters is getting better and warmer.