So basically his bro does work. He is a professional gamer. This is why he spends so many time playing. And in the raws you can also see him work as a construction worker or something like that when his little bro was little. He is also the one who gave him candies to sooth him when he was going to work. And sanya kept the habit since then I think. (Sorry if some part are not 100% accurate I do not speak Korean at all xD only some sentences) I just think they should communicate more-
Spoiler
So basically his bro does work. He is a professional gamer. This is why he spends so many time playing. And in the raws you can also see him work as a construction worker or something like that when his little bro was little. He is also the one who gave him candies to sooth him when he was going to work. And sanya kept the habit since then I think. (Sorry if some part are not 100% accurate I do not speak Korean at all xD only some sentences)
I just think they should communicate more-