I recommend the two novels, Super Devour Upgrade and Endless Absorption. They are both fantasy novels that focus on devouring and absorbing energy. Ye Tian, the main character of Super Devour Upgrade, had a Devour System that could devour all kinds of energy to increase his cultivation, and Lin Feng, the main character of Endless Absorption, had fused with the Energy Conversion Device, becoming a human-shaped Energy Conversion Device that could absorb any energy and convert it into Spirit Power. They are all novels worth reading! I hope you like this fairy's recommendation. Muah ~😗