Asuka@Future.Come

(from ebookjapan):

One day, a transfer student named Asuka Daimon arrived in Aika Kamishiro's class. At first glance, he looks handsome, but when he introduces himself, the class is stunned when he suddenly says he is from the future. Nagagabe, a male student in the class, even says to Asuka, "What's with that setup?"...