The Strongest Martial Venerable in the City

Girls, I failed to protect you in my previous life, and that was my fault. Now that heaven has given me a second chance, I'll protect you properly and restore the glory of the Martial Venerable. Huh? I was a Martial Venerable in my previous life, and my martial arts were enough to take on the whole world. And now heaven has even given me a super System, one that has everything. How am I supposed to level up properly like this!