One day, Minoru's grandfather gives him a megaphone that can make one's desires come true.
His grandfather cautions him to never ever use it for dirty things, but Minoru promptly does exactly that.
His target is Akari, the prettiest girl in his class.
He uses the megaphone's power to unleash his boundless lust on Akari!

Minoru thoroughly assaults every part of Akari's immature body, and she writhes in pleasure!
Her cute, pink voice resounds as she moans in ecstasy!
Saliva drips out of her mouth as she reaches her obscene climax!

[From DLsite English]