The Melancholy of Haruhi Suzumiya, Vol. 15 (Manga)

As a member of the SOS Brigade, Kyon has had his fair share of close encounters (of the bizarre kind). But as Mikuru the Elder's scavenger hunt sends Kyon and "Michiru" into trouble, Kyon realizes that the scope of his friends' supernatural connections are far beyond what even he could ever have imagined-and far more dangerous...