I’m a Martial Arts Prodigy. Chasing a Campus Beauty Should Be Easy

This book is also known as Campus Overlord.

After rescuing an old man in an act of bravery, Lu Shi discovers that the man has a special identity. His eccentric master then sends him off to school, and his life takes an unexpected turn. With his formidable martial arts and peerless medical skills, he wins the favor of all kinds of girls and rises to the top. There's the gentle beauty of a teacher, the fiery and gorgeous senior, and a pair of twin sisters with completely different personalities. On campus, he's the invincible overlord all the guys envy; outside campus… there's no end to the excitement. As the wider world gradually opens up to him, he discovers just how wonderful it really is!