Sky: Children of the Light: The Lord of Light Saves the World

At the request of the Giant Bird, lords from various lands travel to other worlds to mend the cracks in them. The Kingdom Above the Clouds was the first, but now it has been corrupted by the worlds under its protection. Save those worlds and restore the Kingdom Above the Clouds. [Taisho Era] He arrives carrying the scent of rain, umbrella in hand. Beads of light on the umbrella illuminate his figure. "I am Rain." "I hear you really need light?" [Modern Day, Japan] A new member has joined the school's Eight Mysteries. They say that at the boundary between day and night, when the evening glow is at its brightest, you can see the hazy silhouettes of twins. It's even worse if you're exercising. They'll force you to train, no matter what. Though once it's all over, you'll find that your abilities have greatly improved and no time has passed, as if it were all a dream. But that's not the most terrifying thing about the twins... [Modern Day, America] "The snow came unusually early this year," the people of America say. A nationwide first snowfall is pretty incredible. But the snow never stops falling. It seems like an unavoidable disaster. "Get out of my Gotham," says a man wearing a black cape and cat ears. "I'm Batman." "Leave? No way!" The young man twirls his braid around a finger, tilting the feather-like tuft on his head. "I'll let the winter snow destroy all evil!" [To be unlocked...] I couldn't find a story I liked, so I wrote one myself. Out-of-character portrayals are inevitable, since this is fanfiction. There are a thousand Hamlets in a thousand people's eyes. I'll probably be shamelessly indulgent toward the protagonist. If you don't want to read it, just close the page. Please don't tell me, I'm very sensitive. There is no romance, so there are no top or bottom roles. Theme: Save the world, save yourself