What happens when a middle school boy encounters a brother and sister who refuse to take their advice?
When two brothers and sisters, one is calm and silent, and the other is covering his face, his heart is rippling?
What happens when a time-traveling girl discovers that her middle school boy and her older brother are having sex?
Well, everything has an answer.
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This is the story of a time-travel girl and her non-time-travel brother who swept the world on the school BBS...
Disclaimer: If there is something wrong with Fuyun and I am unable to update, I will leave a message in the comments of the last chapter. Please note.