今年から6月第三日曜日は年に一度の『兄の日』になった！普段はケンカしまくりの仲が悪い妹でも、この日は感謝をこめて兄の言うことなら何でも聞かなきゃいけない！だから当然、妹相手でもセックスし放題！親にセックスを見つかっても「お兄ちゃん想いでいい妹だ！」なんて怒られるどころか褒められる。妹への日頃の恨みを晴らすには最高の日！溜まりに溜まった妹へのストレスを年一のこの日に、全力でマ○コにぶっ放してやる！だってこの日だけは誰も兄には逆らえない王様みたいなものだから。兄の日最高！
Starting this year, the third Sunday of June is "Brother's Day," a once-a-year event! Even though you usually fight all the time and don't get along with your sister, on this day she has to do whatever you say out of gratitude! So naturally, you can have as much sex as you want with your sister! Even if your parents catch you having sex, instead of getting angry, they'll praise you, saying, "What a thoughtful and good sister you are!" It's the perfect day to get revenge for all the resentment you've had towards your sister! On this one day of the year, you can unleash all the pent-up stress you've accumulated towards your sister into her pussy! Because on this day, no one can defy their brother; he's like a king. Brother's Day is the best!

– JavGG.net