What happened to the crescent brothers?

Vampire disease Brother Jian Shuo is a character in the comic book "Idol Dream Sacrifice", which is adapted from the mobile game of the same name developed by musical elements. Produced by DavidProduction, aired from July 7th, 20 19 to February 22nd, 2009, with 24 episodes in total. In the cartoon, Jian Shuo's brother got vampire disease, which made him afraid of the sun.