Ie de Munou to Iware Tsuzuketa Ore desuga, Sekaiteki ni wa Chouyuunou datta You desu

Raised by his strict family of five older sisters, Noa leaves home to become an adventurer in a faraway land. But despite being a supposed novice, he keeps shocking seasoned adventurers with incredible feats of strength and magic. It’s no wonder, really. Unbeknownst to Noa, his sisters are some of the strongest people in the world—masters of magic, swordsmanship, trade negotiations, and more. While his sisters think of Noa as worthless, the rest of the world sees him for what he truly is: a whiz! Determined to forge his own path, Noa begins his new life where he’s finally appreciated for his abilities. But what will happen when his overprotective sisters set out to bring him home? If worth is in the eye of the beholder, Noa is here to prove this whiz has been hiding in plain sight all along!

[From J-Novel Club]