My younger brother became ridiculously strong when he trained as his sister told himAne ni Iwareru ga Mama ni Tokkun wo Shiteitara, Tondemonai Tsuyosa ni Natteita Otouto ~Burakon Ane ni Kitaeraresugita Shinmai Boukensha, Yagate Eiyuu to Naru~; 姉に言われるがままに特訓をしていたら、とんでもない強さになっていた弟～ブラコン姉に鍛えられすぎた新米冒険者、やがて英雄となる～; A Younger Brother Who Had Become Ridiculously Strong After Training as His Sister Told Him to Do

If you're an adventurer, it's normal to be able to do this much... Another world adventure fantasy of a younger brother raised by the world's strongest older sister! Shifa, a boy who longs to be an adventurer, is told by his respected older sister, Rose. Believing in the words, "If you want to be an adventurer, you have to be able to do this," he continues his training. Rose's special training, which provides thorough gifted education so that her doting younger brother does not end up in danger, She gradually escalates and becomes more and more harsh... After overcoming such intensive training in hell, Shifa stepped into the adventurer training school on a sunny day. There she was waiting - “Your ability is a bit abnormal!?” Apparently my beloved older sister wasn't normal