MTL - History’s Strongest Senior Brother - ~ 1713. Who loses who?

[Ding! Congratulations to the host for obtaining the 9-Tailed Heavenly Demon Fox Bloodline.]The Celestial Fox Deity: “Little Ancestor, our geniuses are struggling to advance their bloodlines. Could you spare just a small drop of your diluted blood?”…Cain wakes up only to find himself transmigrated into a novel that he had read a few years before his death.In this new fantasy realm where the strong are respected and the weak are trampled, Cain awakens his “Unique SSS-Ranked Primordial Beast Master Talent” before an error happens and merged with “Extra’s Harem Gacha System” which can help him become stronger by having sex with powerful women, including those summoned from the system’s Summon Pool.[Ding! You have shared an intimate moment with the Goddess of Light][Ding! You have received …% of her stats attributes][Ding! You have increased her stats attributes by …%]After merging his talent with the system, he can also contract and evolve powerful beasts, instantly upgrading their ranks using Evolution Points.With the ability to convert money into Evolution Points, Cain decides to build his own force, amass wealth, and take full advantage of the system’s potential to rise above all.[Ding! Do you want to refine the Ice Dragon’s Evolution Pill?][Ding! Do you want to refine the medicine liquid of God's rank?][Ding! Do you want to refine the Godbreaker sword of the God’s rank?]…

Ye Zichen was just a normal university student. Or so he thought.

With the birth of Romo’s 18th generation descendant, something beyond the realm of consciousness has been awakened!

Soma, a college student and also an orphan, who is on his way back after finishing his part-time job, plus his college in the morning, made his life feel monotonous. Still, of course, he didn't have any complaints about the situation he is currently in.To distracted his exhausted body and mind, Soma always finding some times to enjoy the web novels.As a person who likes to immerse himself in the world of novels to find some enjoyment, every day at night, he always reads a web novel he has read for years, and it is called Chronicles Saga.***Chronicles Saga is one of the many web novels that were serialized years ago, and it's already nearing its end game with a couple of final chapters.The story was depicted in an alternate Earth where Magic, Dungeons, Sword, and System exist.It tells the story of a young man who holds high justice in his heart named Leon, who has been chosen as a savior trying to save the world from the incoming disaster in the future by the great Demon Lord.***Then, an unimaginable thing happened to Soma when he suddenly got transmigrated inside the story he read for years. Not as a protagonist who led the story or a Villain but as a 'Side Character'.Soma was transmigrated inside the body of a young man with the same name.To make things much worse, he is being transmigrated into one of the crucial scenes, which becomes a turning point for one of his favorite Heroines in the novel.Then, one thing led to another as Soma was thrown into multiple events. He discovered that the boy named Soma had an unexpected mysterious background and past coming from a ‘Side Character’ who had no role in the main stories.Follow Soma’s story inside the novel world he transferred into as a Side character that will overthrow the story and the world, with his reliable comrades.