I Saved Too Many Girls and Caused the Little Apocalypse

The MC is a high school boy named Shinsen Raika, he had his true little sister abducted by a god in a disaster when they were young and was currently standing in the?Academy?on an artificial island in the distant seas. On the first night, Raika was attacked by the Norse mythological God Brynhildr. who had taken over the body of one of his female classmates. As he was about to be killed, he obtained a special power that lets him give absolute orders to any god using the power of the Eye of Balor. Using his special power, he stops Brynhildr from killing him and Balor orders her to strip naked as a proof of his power. Raika then uses his power to restore his classmate's personality which had been overwritten by Brynhildr and teams up with her to fight the other gods who had using the other students on the island as hosts in a proxy war, with the hope of finding the god who had abducted his sister many years ago.

Namidare Rekka has a very unusual birthright. After his 16th birthday, he will be drawn into many different stories. Each story has a heroine, and each story depends on him to be the hero. On his first day of high school, a strange uniformed girl that only he can see shows up. She claims to be from the future, and claims that his rescuing of many heroines is going to cause serious trouble for the future. It's not long after this encounter that his troubles begin. His childhood friend Satsuki invites him somewhere, possibly to confess her feelings for him. However, before she can, she's kidnapped! Rekka wants desperately to help her, but he finds himself being tossed into various sci-fi and fantasy worlds, each with their own heroines in trouble. Will he be able to get back to Satsuki? Will he be able to save all the others? How can he really tell the consequences of his well-meaning actions?