I'm Really Not a Genius Girl

[Two heroines] The female lead is a bit of a big-sister devotee. (It may lean slightly toward an ensemble cast.)

I just want to be an ordinary mage. Why are you dragging me into things like saving the world? Can't I just take it easy every day from now on? What? You say my sister's been pulled into the conflict? As her devoted little sister, I can't stand by! The girl I like has gotten caught up in it, too? Fine! I'll start taking it easy after I save the world!

“Every kind of beauty will fade, but your midsummer will flourish forever.”