When impressionable young Natsume receives a love letter from a handsome freshman, he falls in love at first sight. Natsume goes to find his admirer to confess that the feelings are mutual, but he is shocked when he is harshly rebuked. In order to discover the one who is truly worthy of his heart, Natsume must unravel a tangled web of miscommunication and secret admirers. The long-awaited manga by Kashio, Switch On! is a collection of short stories that features young men falling in love for the first time.