Level E

Thousands of aliens from across the galaxy secretly live among humans, their presence hidden from Earthlings. Baka, the prince of the planet Dogra, crash-lands on Earth and loses his memory. He ends up forcing his way into the home of Yukitaka Tsutsui, a high school freshman who just moved into his own place. Yukitaka's quiet life is turned upside down as he becomes the unwilling victim of the prince's chaotic antics.