Saiai no Onee-sama ga Akuyaku Reijou datta no de, Kami ga Sadameta Scenario ni Aragaimasu @COMIC summary:
"I will defeat the destiny that stands in my sister's way!" The younger sister adores her older sister, the villainess, from the bottom of her heart. Without caring about how it may look, she stands up against her sister's bad end! An energetic loop fantasy that spans time with only love and persistence!