Fairy Tail: I Stole the Ryujin Jakka in My Sleepwalking - Chapter 242: FTRJ -

Waking up in the body of a 6-year-old boy a few years before Cintra is destroyed, Madara receives a system that gives him the ability to gain the powers of Uchiha Madara.[The peak of Uchiha Madara's system is before he becomes the ten-tails jinchuuriki.]The system's percentage does not stop Madara's power, but rather the system's release. After all, I don't want to see a character who goes around killing everyone from the beginning of the story.

The Hero of Light that saves the world.The Demon King that plunges the world of darkness.Which one will you be?“I'm both and the Great Sage, the Barbarian King, and everyone else while I'm at it!”

1. Download a suspicious game
2. Catch a few magical pets as partners
3. Go through interesting daily routines and lead the pet shop to a whole new level

- Description from Novelupdates

In a future, alternate timeline, the Gods have been reawakened with a fury, and with that fury, they take control of the world and reshape it to their collective liking, and reignite the power of magic, changing the way the world functioned as we knew it.With the concept of magic now introduced to humanity, they went wild with it in this new world, creating new things and people that eventually restructured the system of the Gods themselves, changing everything once again.Time has passed since then, and in a remote city in the largest desert two beings encounter one another and create an unlikely spawn, the mother dies shortly after giving birth due to a curse inflicted upon her by mysterious forces. The was then father left to take care of his child on his own and does his best, but is forced to return to his home realm in hell, due to the same reasons he was allowed in the mortal plane in the first place.Left alone with only her friend, the two young serpentines venture off on many adventures together, developing a strong bond for one another that quickly grows into something more.Then on one of these adventures, they find themselves trapped inside a hidden and desolate place. They searched for a way out, but in the end, only one escapedNow alone the little serpent girl has to survive this world without anyone by her side, struggling to cope with all of the losses she's suffered over her life.Will she be able to survive? Or will she fall into an endless spiral of despair and loneliness?