Holding strictly to his family's creed, Kou Ichinomiya has never once, in his life of privilege, owed anything to anyone – that is, until a self-proclaimed Venusian named Nino saves him from drowning in the wake of a dire accident involving Kou's pants. Eternally indebted to the supposed extraterrestrial, Kou moves into her little community under the bridge along the Arakawa river. Ripped from his life of luxury and success, the young Tokyo U graduate now must adjust to his well-appointed hovel, strange new neighbors, and peculiar lover, Nino.
A man is miserable. Despite all his dreams of a “Rose-Colored Campus Life” filled with raven-haired maidens who dote on him, his social life is going nowhere. He has no girlfriend, his only good friend keeps getting him into trouble, and the circle he joined brings him no joy. So he tries again, and again, reliving his first two years of college life ad nauseum, making different decisions each time, having no recollection that he’s already done this all before. Will the man ever be satisfied with how his life turns out?
Arakawa Under the Bridge and The Tatami Galaxy are way more similar than one might think at first glance. First, both series tell the story of a man stuck in an odd world/setting which they can't seem to get out of, and populated by a bunch of weirdos. And then there's Maaya Sakamoto, the brilliant voice actress who plays both Nino from AUB, and Akashi-san from TTG, two somewhat similar characters in terms of personnality.
If you enjoyed one of those two great series, there's no doubt in my mind that you'll love the other.