Imouto ga Onna Kishi Gakuen ni Nyuugaku Shitara Nazeka Kyuukoku no Eiyuu ni Narimashita. Boku ga.(2022)

Imouto ga Onna Kishi Gakuen ni Nyuugaku Shitara Nazeka Kyuukoku no Eiyuu ni Narimashita. Boku ga.

My sister enrolled in an all-girls knight training academy. Even at the kingdom's most prestigious academy, my little sister, a brilliant girl, excels in every subject...

"I'm telling you that my brother is so much stronger than me!"

No, I'm just an ordinary guy.......?
(*That's not true. He just doesn't realize it yet.)
Because of that boast, the top knight of the school challenges me to a mock battle.
(*The strongest knight of the school realized their difference in strength in an instant.)
Now make sure you cool down properly after exercise!
(*My brother's massage made the lady knight so happy that even other nobles were impressed!)

Just doing my normal thing, I somehow caught the attention of the princess?

A harem of lady knights for a self-proclaimed ordinary guy who doesn't recognize his own power!

(Source: Fantasia Bunko, translated)