I Really Thought I Could Relax… Until An Alien Arrived!

Reincarnated into the world of High School DxD, Soutarou Takashina did what any reasonable person with knowledge of the future would do…Prepare.For fifteen years he trained, researched, manipulated, schemed, gathered allies, built a family, and became strong enough that even the monsters he once feared stopped looking quite so terrifying. Devils? Handled. Fallen Angels? Prepared for them. Dragons, Gods, Sacred Gears, Great Houses, Rating Games…? Yeah. He’d figure it out. After all that work, Soutarou finally reached the point where he could sit back, relax, and enjoy his new life… Then a naked pink-haired alien suddenly appeared in his bathtub…. Wait. Alien? What do you mean this isn’t just High School DxD?!?! — Description from novelcodex.orgFull novel: I Really Thought I Could Relax… Until An Alien Arrived! — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠