Review Detail of ShaneMichaels in Demon Lord's Reincarnation

I'll try not spoil anything major. I've read over 300 chapters. The main character is reincarnated and becomes childhood friends with a Hero. He sets out on his own personal quest to save his friend from predetermined destiny. Along the way, they gain power, notoriety and girls. The author creates a world and history that helps define the characters and events.