Fairy Streamer: Every Fairy I Get Makes Me Stronger

[You have died!] These words resonated in Felix’s mind as he felt his mind slowly dissolve into nothingness. However, before his mind merged with the eternal darkness, a sudden light pierced through it. A giant ethereal figure gazed down at him with a sorrowful expression. [Warning! Unregistered Zenith has breached your channel] [The Sovereign of Magic is touched by your unwavering determination and dedication] [The Sovereign of Magic has initiated an Eternal Contract with you.] [Error!] [Such Contracts are forbidden between Higher and Lesser beings] [Strongly advised to select alternative Contract Terms] [Error Overruled!] [The Sovereign of Magic offers you an Eternal Contract] ...... Felix lived a mediocre life, working multiple jobs to provide for his younger sisters. A life he had grown satisfied with. Yet, in a world once invaded by grotesque monsters known as Trolls, which breached their world through the internet itself, causing havoc and mass destruction, peace was like walking on thin ice. Having lost everything once, a memory that still haunted him to this day, Felix attains a device he uses to travel to another world in search of the power to protect his loved ones, and become a Streamer; individuals able to transfer a portion of their powers from the alternate world to theirs upon reaching a certain level, serving as both a means of entertainment and a beacon of hope for what remained of humanity. A short-lived dream. Felix soon discovers he had inhabited the body of a weak, F-Ranked Faymancer. A class capable of summoning only Fairies, creatures deemed weaker than even a mere slime. After a failed attempt to upgrade his rank ends in the slaughter of his entire party, Felix finds himself on the brink of death. A lone Zenith, one of the mysterious beings behind the explosive growth of Streamers, adhering to the plea of one of her own, took interest in Felix. Touched by his resolve and conviction, she offered him an Eternal Contract to become hers. Now empowered by a zealous Zenith who was far too eager to shower him with gifts and Gems, Felix grows stronger by summoning OP Fairies capable of mass destruction, while also becoming the first Fairy Streamer in his world as he strives to protect those he cares about with his newfound powers. — Description from novelcodex.org