Manga Isekai Tensei… Saretenee!

On the first day of high school, Yuuki Kousuke was killed while trying to assist somebody. He was not expecting the being he was aiding to be a deity, yet that was the case. The god then granted Kousuke the chance to reincarnate to a new world he was so eager to explore like the ones he saw in his beloved isekai stories. However, his newfound life was short-lived when he found himself back at the place of his death. This is the story of a protagonist who was given a unique power by a divine being and is living his days in the modern era, but not in a way he expected. The one he saved was not a human, but a god.