It has been announced that Nagi Yanagi will sing insert and theme songs for Jun Maeda’s upcoming anime. The Day I Became a God.
The show starts broadcasting in October 2020 and will be produced by Studio P.A. Works.
According to MAL News, synopsis is as follows:
At the end of the last summer vacation of high school, Youta Narukami spends his days preparing for the university entrance exams, when a young girl named Hina suddenly appears, proclaiming herself as the “god of omniscience.” Youta is confused and does not believe Hina when she tells him “The world will end in 30 days.” After witnessing Hina’s God-like predictive ability, Youta begins to believe her powers are real. Hina, who is innocent and childlike despite her supernatural powers, decides for some reason to stay at Youta’s home. Thus begins the start of their lively summer before the end of the world.
You can watch the video that previews the opening theme here: