Suzumiya Haruhi no Yuuutsu

Synopsis

Yuki completes her explanation of the Integrated Data Sentient Entity and how it relates to herself and to Haruhi. Furthermore, she discusses Haruhi's powers, and how she could destroy and recreate the world on a whim, even though she is not aware of her powers. Kyon, while simply trying to understand all of what Yuki had told him, is initially skeptical of her story. The SOS Brigade gets a new member, a mysterious transfer student by the name of Itsuki Koizumi. On a day off from school, the SOS Brigade searches the city in groups to try to investigate mysteries, during which Mikuru reveals to Kyon her existence as a time-traveler and her mission in relation to Haruhi. Kyon later confronts Itsuki, revealed to be an esper, and as he learns of the purpose of the Agency. All three of these members confirm that Haruhi somehow altered the reality of the universe three years ago.(Source: Wikipedia)