In a world where understanding holds more power than swords, a man finds himself transported to a mysterious realm. Alone on a mountain teeming with unfamiliar flora and fauna, he navigates past dangers like a massive slime and thieves. Upon reaching a castle, he is mistaken for a suspicious intruder and faces interrogation by the female knight Ilius. As discussions about the mountain bandits ensue, Irias, a troubled bandit hunter, takes matters into her own hands. Will he seek valor, a harem, or simply safety in this new world? Follow the tale of a man using 'Understanding' as his weapon to survive the challenges of this unfamiliar land.