Twilight has always harboured a not-so-secret affection for her older brother, ever since she was a filly. He knew it because she made it so painstakingly obvious, but he'd never reacted in any way!

Tired of not knowing whether Shining simply didn't find her attractive or was only refusing because of silly taboos, Twilight decides to take matters into her own hooves. An amnesia spell, to be applied once daily to retain the effects. The recipient will remember everything that transpires once it wears off.

Cover art by Dimfann! Go check him out on Derpibooru if you're curious about the full image.

Edit: Non-con tag added because mind altering spells such as those that induce amnesia are a little
bit rapey, even when used with the best of naive teenage intentions.