I think is something about his blood dynasty (rourou has a mark on his back, like his father and every firstborn of the family). He can see many things like spiritual threads of the people, like his grand father had sick spiritual threads so rourou saw and broke them, consequently the grandfather felt well and the cancer disappeared
I’m sorry for my bad Eng! I hope you understand what I said
Don’t worry your English is good! Yes I did get that part. Actually, I was saying that they need to know about that haha they just think that he’s playing... but he’s saving gramps that’s amazing and I want them to know
Man can someone tell them about rourou’s power? This is very important and yet it seems like there’s just the great grandpa who probably could end up finding out about it... but then again it’s been years since they visited him. There’s so much going on I wonder what secret wil come out first