In a Comprehensive Comic, the Mission of Saving the World Turns into a Battle to Defend Love?

[Light novel + comprehensive comic + system + magic + different world + romantic comedy] This is a world on the verge of collapse, and a love affair that has failed 519 times. After the world ended again, she was the only one who still held onto this secret: they had been each other's happiest lovers, but he had forgotten everything. (Ugh... I have to make him fall in love with me again this time!) In the world that was restarted for the 520th and final time, the black-haired boy looked at the blond-haired divine girl in front of him in confusion, feeling an unexplainable throbbing in his heart. So, the girl smiled and issued an invitation: "Come, join me - to save this world that once belonged to 'us'." This ultimate mission has turned into the final adventure of the divine girl and her "strange" lover. However, at the beginning of the journey, new errors occurred in the connection between the worlds-Manyuri, Kisara, Liuying... And other "singularities" from other worlds arrived one after another. (Wait! Why are they all cute girls?! The current <Future> is in a state of innocence! Could he be...) Not only that, there seems to be something wrong with the God of the Future? In order to save the world, the two gods who control time have to work hand in hand with these special girls. (No! I have to keep an eye on him!) The last battle to save the world—and protect first love, begins!