The Intrigues of Haruhi Suzumiya (light novel) (Volume 7) (The Haruhi Suzumiya Series, 7)

BACK TO THE FUTURE IN ANOTHER ADVENTURE FOR THE SOS BRIGADE!
It’s a new year, and Haruhi Suzumiya, the powerful (and pushy) leader of the SOS Brigade is actually…content. For once, she’s not seeking out time-traveling exploits, murder mysteries, or any other wild adventures that could lead to the destruction of the entire world. Surprisingly, it’s Kyon, the most normal member of the SOS Brigade, who wants to shake things up. When Kyon discovers that something’s not right with the universe, it’s up to him, his pal (and secret crush) Mikuru, and the beautiful but stoic Nagato to head back to the past in order to save the future. Join the frenzy and fun with this seventh book in the phenomenal bestselling series that took the world by storm.