The Girl Who Was Told “You Have No Talent” Had Monstrous Talent is a Manga/Manhwa/Manhua in english language, Adventure series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Sweet, petite Litty was told by the (hero’s/heroes’) party that she has no talent in swordsmanship or magic. Even so, dreaming of being the strongest, she knocks on the door of the adventurers’ guild. Naturally, for a girl with no talent, reaching the top class is an impossible dream… Or so she thought, but her true talent lies in her resilience. Raised deep in the mountains, with her overflowing passion, she trains day and night! “This much is normal, you know?” she says brightly, completely oblivious to the fact that she’s truly a muscle-brain. In no time, she masters sword, spear, and axe techniques, just by seeing them once, and even instantly defeats a named boss. One day, a horde of monsters closes in on the city. While talented adventurers despair, for some reason Litty’s heart dances…? Reckless advance! Battle before flowers! I’ll do anything that makes me stronger!? Afterward, she’s hailed as a monster, in the best possible sense, and she takes off on an oblivious rapid growth fantasy!