"I've been reading this book for a while now, and it's amazing! Although my words can't do this work of art justice I'll try my best: The characters feel so real and the author does an amazing job in making all of the magical laws make sense. When the protagonist becomes more powerful it isn't in some vague way that he is suddenly 'stronger' but he gains some new thing through hard work. It makes the story that much more impressive because it feels like he is just describing how another world works rather than some make-believe thing!"
— CPT_Ling_Ling (Webnovel reader), five stars, c. 2022

"By far the best book on this platform. Remember to read the prologue otherwise you won't understand who Carl or Chris or Ezio are."
"A great plus of this story is that there are no gratuitous good guys or bad guys, with one exception. The characters deemed to be protectors, guardians, are often passive in front of evil because they deem it necessary. Likewise, 'evil' characters are not defined by their crimes and have believable motives and dreams that actually could change the world for the best. The main character also frequently does good for the wrong reasons."
"There is a love square, but the mc doesn't allow himself to be tortured by it. He is able to resist the seduction of his love interests, especially when he thinks that love might be immature, that it might exist for the wrong reasons."
— ThoMiCroN (Webnovel reader), five stars, c. 2022

"Supreme Magus is, hands down, one of the best fantasy novels that I've ever read. Perfectly blending a world with an unfathomable amounts of detail and lore with good character development, intricate storylines with a refreshing take on magic, Supreme Magus manages to amaze me with each and every chapter, reminding me of why I have been reading it for the past 2 years, time that I do not regret investing."
"The author's - Legion20's - writing style is particularly unique and I personally loved how it has grown and evolved over the past two thousand chapters."
"The novel has had consistent uploads for as long as I can remember, with a couple of breaks here and there, but too irrelevant for me to downgrade the rating."
"If you enjoy a morally complex character who permanently grows and changes, never faltering before whatever obstacles are thrown his way, then this novel is for you."
"From infant, to a soldier. From a soldier, to Supreme Magus."
— WrongerMonk_10 (Webnovel reader), five stars, c. 2022

★ His bloody revenge in a previous life dragged him into the cruel chokehold of fate. He is reborn - obsession intact, memory clear - into a medieval world of magic overrun by monsters, as a newborn infant. The avenger's blade is already being tempered in the cradle.
★ No. 2 on Webnovel's Originals Power Ranking, behind only _Shadow Slave_. 4,589 chapters to date, 115.8 million reads, and 4.81 out of 5 from 6,702 ratings. Volume One of the US print and audiobook editions, together with the webcomic, is scheduled for summer 2027.
★ The author holds a master's degree in chemistry and did his thesis work on the interaction between nanoparticles and bacterial strains. That background gives the book a magic system built like a lab protocol: nothing here is wished into being. Every spell cast has to account for mana expenditure, timing thresholds, and how much the body can physically take.
★ The author tears the mask off hypocrisy in the blurb itself. The protagonist is neither a hero nor an anti-hero - just a broken, cynical, pragmatic survivor doing what it takes in a brutal jungle. If that kind of cold rationality is not what you came for, close the book now.
★ His drive to reach the top in this life has nothing extraneous in it. Only by living long enough to never reincarnate again can he hold on to the bonds he has made in this life - and never be dragged back to the desolate starting point where he had nothing.

Derek McCoy spent his whole life clawing through hardship and injustice. He had long since given up on living well - he only asked to keep living. Then the last thing he had left was taken from him: to avenge his murdered brother, he paid with his own life.

The wheels of fate did not stop there. He reincarnated carrying the memories of his previous life, landing in a world called Mogar as an infant named Lith Verhen. There is magic here, and there are monsters.

The weakness and helplessness of his former life left marks that would not fade. He grew into a cold, cynical, unscrupulous man who measured everything against a brutally practical standard. To never again be at anyone's mercy, and to protect the people he truly cares about in this life, he vows to master magic at any cost - and sets his ultimate goal on immortality itself, for no other reason than to sever a cycle of rebirth with no end in sight.

Follow him the whole way: from a mourner consumed by vengeance to a mage who invents a magic system of his own; from a nursing infant to the Supreme Magus who shakes all of Mogar.

Legion20
He comes from a chemistry background: both his bachelor's and master's degrees are in chemistry, he graduated magna cum laude, and his thesis work focused on the interaction between nanoparticles and bacterial strains.
The pen name comes from a science fiction short story he wrote years earlier, whose protagonist was named Legion. By the time he registered on the platform, that name was already taken; he was born on the 20th, so he became Legion20.
He has written only this one work: _Supreme Magus_ is his sole major serial. He is known for rigorously constructed progression fantasy systems, a hard-magic approach to spellcasting, and a deep portrayal of a complex, anti-heroic protagonist's psychology. His release schedule - up to twelve chapters a week, at 1,200-1,400 words each - is relentless, and it has given him a devoted readership and a commanding presence among hardcore Western fantasy readers.
His stated method: the start, midpoint and endpoint of every arc are fixed before anything is written; and, in his own words, "I don't do asspull" - no twists without groundwork.