The King of Beasts finds himself transported from his savage and untamed realm to a mystical world where classes, statuses, swords, and magic are the norm.
Lost and disoriented in his newfound human form, he encounters a girl who was transported just like him.
But unlike the king of beasts, the girl was very familiar with this kind of situation as she had read many novels and played games with this kind of plot. 
After certain events, they both decide to become adventurers, embarking on a quest to explore this magical world they find themselves in.

King of Beasts and Gamer Girl Adventuring in Another World