Kamen Rider Eternal in an Anime Crossover

Worlds featured: Weathering with You, Bocchi the Rock!, MyGO!!!!!, Your Name, Puella Magi Madoka Magica The Puella Magi Madoka Magica characters don't appear until after more than ninety chapters. An unknown boy with immense power. When you're pushed to the brink, will you still hold firm to your choice and do what you want? That's still a long way off. Now for the main story: My name is Amano Hina. I think my life is pretty good, just a little tiring. But I have my younger brother, so I don't have to worry too much, and life is quite comfortable. But what was that island tonight? Who were those two people? They looked so strange. And why did seeing one of them, the white one, give me such a familiar feeling? I'm really terrible at writing summaries. Please, dear readers, give my book a chance. [Contains original memory-related ideas] (⋟﹏⋞)