[This article is an expansion of the song of [Asian Jun×やなぎなぎ-Invincible Soldier]. Contains a lot of private features.
On the nearly disintegrated Doomsday Planet, a huge library remains miraculously intact.
Stepan Ivan Lermontov found remnants of the bygone world there and wrote down reading notes.
——This one is about a brave and invincible girl.
Concept: The First Notebook of Stepan Ivan Lermontov
