Yes the are very very similar, so much in fact one has very obviously read the others work. I am even going to go out on a limb here, I think the same guy wrote both.
ARC is a fantastic read, it is well written and even though it kinda takes a lot of liberty with TLMS, in some ways takes the good and leaves the bad.
It is not as deep at TLMS is but I like ARC, he seems more kind than WEED even if he starts to show WEEDS greedy side later. ARC is just another version of WEED.
Dont pass this story over because someone says its just a copy, it does the genre well and is fun to read.
Arc:
No father
Mother in hospital
In debt due to hospital bill
No sister but a friend from work that he calls oppa
Plays a game to earn money
Is very greedy and will do anything for money
Can summon Skeleton and Vampire
He beats his summons into submission
Studies martial arts at the police gym
His teacher joins the game
Has thugs as friends that back him up in the game
Uses “survival cooking” to help stats and free food
Has a hidden game class
Grinds in the game ever chance he gets and does 30 hour hunts
Has an adversarial relationship with ‘The Hermes Guild’
Can sweet talk the NPCs
Abuses other players
Weed:
No father or Mother
Grandmother in hospital
In debt due to no family support
Has a sister
Plays a game to earn money
Is very greedy and will do anything for money
Can summon Skeleton and Vampire
He beats his summons into submission
Studies martial arts at the local dojo
His teacher joins the game
Has fellow martial artist from the dojo as friends who support him in the game
Uses “cooking” to help stats and free food
Has a hidden game class
Grinds in the game ever chance he gets and does 30 hour hunts
Has an adversarial relationship with ‘The Hermes Guild’
Can sweet talk the NPCs
Abuses other players
After reading so much TMLS and ARC, I am starting to see that greed, obsession with money, self interests and an obsession with not being cheated, are Korean values. If you can stomach entire chapters about Arc/Week cheating other players for no other reason than greed, then you will enjoy the other parts of the story that are actually quite good.