Haikyuu: Zero To Almighty - Chapter 81: Guardian Deity of Karasuno (2-in-1)

I never imagined this would happen to me. Reincarnation? A second chance? Into a fictional world, no less? It was the stuff of wild stories, impossible dreams, and late-night “what ifs.” But life has a funny way of playing with your expectations.When the choice was offered—life as I knew it or a chance to die and be reborn somewhere else—how could I say no? The catch? I wouldn’t return to just any world. No peaceful afterlife, no utopia waiting for me. Instead, I landed in the heart of chaos.Here I am, standing in the shadows of giants—of gods, heroes, and monsters. Welcome to the Marvel universe, where cities are playgrounds for battles that could shake the world, and everyday people like me are nothing but collateral damage.But I’m not just another face in the crowd anymore. Somehow, I’ve got a role to play. My name in this world is Dave Garcia, and this is the story of how an ordinary guy from another life navigates a place where the impossible is an everyday reality.What would you do if you woke up in a world where the fate of everything could be changed with a snap of the fingers? Because that’s exactly what I’m trying to figure out.

My talent can be said above average but for my family I am useless. Six years after the incident that I caused I accidentally created a system.Now I wonder if I will fail again....with my new power I will make sure my cute little older brother, sister and especially my Father will pay the price of creating a monster.... Me

The prospective college student Luo Ji, who is enjoying the last summer of the third year of high school, has undergone earth-shaking changes at this moment after accepting the invitation of the game friend and becoming the player of the game of “Civilization Rise”.
This is a war game between the world and the world, and it is a fierce collision between civilization and civilization!
To annex the five continents, sweeping across the three oceans, and see how Luo Ji led his people, in this powerful enemy look around, the battlefield of the heroes to fight for a battle to the most powerful imperial civilization!

- Description from uukanshu translation

Ronnie, a college student with a boring life has everything around him change when his whole world is turned upside down by a woman he accidentally summons while trying to summon a magical familiar as a game.His peaceful and tranquil days are disrupted as he tries to help her fit into human society while also searching for a way to break their bond.Hell further breaks loose when he discovers that his familiar is indeed the demon queen and mysterious forces start trying to eliminate him for reasons unknown.He struggles to protect himself, adjusting to having a demon queen in his life, and understanding his growing feelings for her.