This Is Superluminal Kaguya!

Sakaigawa Middle School student Sakayori Ayaha found a mysterious baby, and so began her bond with Kaguya-hime. In the virtual space Tsukuyomi, created under Yachiyo's direction and promoted by Academy City, the two work together toward putting on a concert! Though they face challenges from A Certain Scientific Railgun and A Certain Magical Index along the way, team up with the Symphogear girls to save the world, meet Nanoha and Fate from Magical Girl Lyrical Nanoha and get in touch with the Time-Space Administration Bureau, accidentally get caught up in a battle with the Pretty Cure girls, and mistakenly transmigrate to the Akame ga Kill! world to help everyone... But then again, they also watch MYGO and GBC, listen to Bocchi the Rock!, see the Shoko-Soyo battle at Asukayama, and even go glamping... So... this is a slice-of-life set, and the story of the Super Dimension Kaguya-hime! 【The main focus is Kaguya and Ayaha, with Yachiyo joining later】 【A full-fledged serialized novel】!