Junior Brother, You Are Invincible, Go Down the Mountain and Do Whatever You Want.

[This book is popular in Japan, it is decisive in killing, the protagonist is invincible, the pace is super fast, and it is so exciting. Three years ago, Ye Chen's parents were killed in their own home. Ye Chen escaped because his heart was on the right side. He jumped into the river and was rescued by the Fifth Senior Sister. He practiced on Penglai Island for three years and returned invincible. He vowed to kill all his enemies with his own hands. I have five senior sisters who are all-powerful, and they are all crazy about supporting their younger brothers, and they only dote on me. I have eight senior brothers, all of them powerful and wealthy. I also have eight god-like masters with tremendous fighting power and supernatural medical skills. What happened to me doing whatever I wanted?