"Signed book. Reposting or plagiarism is prohibited" [Daily updates]
"This book is half original, half game-based. The ending will lean mainly toward the original story. Please don't flame it if it's not to your taste."
A brother and sister woke up in an apocalyptic space, where they found a strange System that made them draw prizes. The younger sister became a super-lucky five-star puller, getting four five-stars in five pulls, but every time she smashed the screen in frustration. The five-stars were all her favorites, though. Her brother wasn't nearly as lucky, with a much lower five-star rate: only two five-stars in five pulls, and there was even junk mixed in.
[Original Female Protagonist's Harem]
"Ziling is unlucky, while I'm the lucky one", Ye Zixi
"We finally meet, Zixi", Kong
"Zixi, can I have a drink with you? Can I? Can I?", Wendy
"I wish to share a special relationship with you. Would you be willing?", Zhongli
"Partner, want to be with me from now on? I'll give you all my toys.", Tartaglia
[Original Male Protagonist's Harem]
"My sister's lucky, and I'm unlucky. Fine, but why are there two bags of garbage?", Ye Ziling
"Let me see what's in the garbage", Xing
"Xing, don't do anything rash! There's really nothing in there", March 7th
"I treat everything differently, but you're the exception, Ziling", Xier
Is my sister the protagonist?