Help me finddd

This one is a webtoon(?) I believe. It's a female MC where their world has like super abilities and shit, she has a short blue colored hair(?) And she wears glasses. Her ability(?) is something involving time like she can turn back time for a minute(?) So she uses that to her advantage. She's also like train in a sort of facility(?) with the other ability users too. Her sister is super powerful and is involve with illegal things, i think they don't get along that well too since the MC doesn't want to be like her. That's all I can remember （/TДT)/ sorry for the amount of question marks I'm really not sure since it's been a while since I've read it and I suddenly remembered it, so now I wanna reread it. ╮(￣▽￣)╭