Honzuki no Gekokujou - Alas, she's from Dunkelfelger (Doujinshi) Manhua

Title: The Enchanted Bookseller In the mystical town of Dunkelfelger, where stories whispered secrets and books held untold power, there lived a humble bookseller named Elara. With an insatiable thirst for knowledge, Elara curated the most enchanting collection of books in her quaint little shop. One fateful day, a mysterious stranger clad in shadows entered Elara's shop, seeking a rare tome said to hold the key to unlocking forbidden magic. Intrigued, Elara rummaged through her shelves and presented the stranger with the coveted book, its pages shimmering with ancient runes. As the stranger flipped through the book, a sinister energy began to emanate from its pages, casting a dark shadow over the shop. Sensing danger, Elara reached out to reclaim the book, only to have it whisked away by the stranger's malevolent powers. Determined to right the wrongs unleashed by the dark magic, Elara embarked on a perilous journey to reclaim the stolen tome and restore balance to Dunkelfelger. Armed with only her wits and a few trusted companions, Elara traversed treacherous landscapes and encountered mystical beings beyond imagination. Along the way, Elara unearthed hidden truths about her own lineage, discovering that she was descended from a line of ancient guardians tasked with protecting the magical realm from those who sought to wield its power for selfish gain. With this newfound knowledge, Elara embraced her destiny as the rightful protector of Dunkelfelger's mystical secrets. In a climactic showdown with the shadowy stranger, Elara tapped into the depths of her courage and unlocked the full extent of her latent powers. With a dazzling display of magical prowess, she banished the darkness that loomed over Dunkelfelger, restoring peace and harmony to the once-troubled town. As dawn broke over Dunkelfelger, the townspeople hailed Elara as their savior, the Enchanted Bookseller whose bravery and selflessness had saved their beloved realm. And though her journey was far from over, Elara embraced her role as guardian with renewed determination, ready to face whatever challenges lay ahead in the ever-unfolding story of Dunkelfelger.