Episode 1

The Day a God Descended (降臨の日 Kōrin no Hi) is the first episode of the Kamisama ni Natta Hi anime series.

Plot
As soon as Youta finishes a basketball game with his friend, Ashura, a girl named Odin proclaiming she's an omniscient god presents herself to him. Youta tries to ask as to who Odin is, but she cuts him off and guesses correctly that he was going to ask who she was and calls herself Odin. Odin's "accurate" guesses of what Youta will do and say next continues for a bit until Odin states that she wants to play basketball with him and Ashura. To this, Youta allows her to join them and introduces Odin to Ashura in the basketball court. Like Youta, Ashura figures the young Hina is a lost child and suggests they take her to a police box. This makes Hina throw a tantrum demanding he not only respect, but also worship and revere her. Not wanting to waste anymore time, Ashura passes the basketball to Odin who before she tries to take a shot, asks if something good will happen if she makes a successful shot. Astounded, Ashura takes the ball from Odin and states they should take her to the police box. However, Youta states that they should calm down as they're trying to take a break from studying for their entrance exams. Hearing this, Hina tersely states that it's pointless to study as the end of the world will occur in 30 days. Not believing her, Ashura calls it quits for that day, leaving Youta who has a "date" with someone later that day.

After Ashura rides off on his motorcycle leaving Youta and Odin behind. The two then fully introduce themself to each other and Odin throws a tantrum learning that Youta's surname is written like "Great Sun God" while her's is simply Satō. This leads to Odin disclosing where she's from and since Youta is in a hurry to meet someone whose surname is Izanami in the library, which causes Odin to have another outburst. Odin then decides to follow Youta to his meeting with Kyouko. Initially, Youta is against this due to how she's dressed, but concedes so long as Odin behaves herself. On their way to the library, Odin purchases an umbrella, and they continue their walk to their destination as Youta claims it's silly for Odin to use an umbrella on a sunny day. Much to Youta's surprise, it then starts to rain and right when he tries to take the bus, but Odin admonishes the notion as it sets off without him. The rain then stops and as the two continue walking forth and see that the bus was caught in traffic. Eventually, the two reach the library and meet with Kyouko who is busy studying with many of the boys sitting close by admire her. Their stay their doesn't last long as Youta is thrown out of the place due to his outburst.

Outside of the library, the two start walking and talking about the end of the world. Youta is skeptical that it will happen as much as he is that gods exist. On the other hand, Odin reassures him that it will happen and it will be by humanity's foolish choices. In order to prove her claims to Youta, Odin channels Natsume Soseki, but Youta doesn't buy it. Stomach grumbling from Odin's belly makes it painfully obvious that she's hungry so as part of a deal, Youta treats Odin to some ramen in exchange for her going back "home" when she finishes. At the ramen shop, the owner misinterprets Odin and Youta's relationship with each other, much to Youta's chagrin. As the tv plays a horse race, Odin predicts a lame horse will win the race, which impresses the ramen shop owner. Still, however, Youta is deeply skeptical about Odin's "omniscient" powers, so Odin accurately predicts the full outcome to the next horse race. Astounded and avaricious, the ramen shop owner tries to coax Youta to use Odin's omniscience to make them into billionaires. Panic-stricken, Youta leaves the money for their meal on the counter and dashes off with Odin in hand as the ramen shop owner pleas that they return.

Somewhere by a highway, Youta is overwhelmed by Odin's omniscience, whom states that her power is true and offers to stay with him until the world ends. In exchange, Youta can use Odin's omniscience for whatever he so wants, and what he decides to use it on is to pass the entrance exam to the same college Kyouko is attending. However, Odin reiterates that the world will end in 30 days so that's impossible. Although Odin laments deciding to stay with Youta, she details she'll use her omniscience to meet Kyouko's standards. When asked what will it take for Kyouko to like him, Odin notes that she's an avid fan of baseball and enjoys watching things related the sport. This causes Youta to have a meltdown as for the longest time he's been playing basketball. Therefore, Odin sets up Youta for a baseball game where he plans to strike a grand slam making his team win the game.

Afterward in a baseball field, Odin sets up such a game and although he follows Odin's advice, the last piece given to him in the end doesn't occur. Agitated, Youta argues with Odin claiming she set him up for failure and Kyouko witnessed everything. So, Odin convinces Youta to be blunt with Kyouko as the world will end in less than 30 days, however, she flatly rejects him when he confesses. Mortified by the entire experience, Youta asks that Odin return home, however, she can't and suggests that she live with him for the time being. She goes as far as to proclaim that if he contacts his parents and asks if she can live there for a while they'll agree to it. And sure enough, when Youta explains Odin's situation to his mother she allows it.

Characters

 * Hina Satō
 * Youta Narukami
 * Ashura Kokuhou
 * Kyouko Izanami
 * Tokiko Narukami (voice)