Rest assured, no romance so far and I hope it continues without it. The plot, fights and art all are well done. Also there isn't any unnecessary scenes and the story flows smoothly. For me I consider it one of the best and i highly recommend. As for the main character's age:
(It might considers a SPOILER I don't know but to be fair I will put a reminder)
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he will change to his younger self once again and will seek revenge against his organization.
No problem. I couldn't agree more with you haha.
I also hate it when they push romance out of nowhere in any genre specifically in action.
So far all the villains are great especially yohan (he's a blind whitehead one). Anyway hope you enjoy your read. Lastly if you could recommend something great to read, I would appreciate it. (=・ω・=)
THX a lot. Actually I read all of them.
Here's some as well as recommendations:
(Unique)
The Knight of Embers
Barbarian Quest
The Live
How to Live as a Villain
The Legendary Mechanic
Legend of the Northern Blade
(Regress, transmigration, fantasy.. )
Return of the Flowery Mountain Sect
Heavenly Grand Archive’s Young Master
The Dark Mage’s Return to Enlistment
I Became the Tyrant of a Defense Game
Academy’s Genius Swordmaster
The Demon Prince goes to the Academy
Devil Returns To School Days
My School Life Pretending To Be a Worthless Person
Dark Mortal
The Childe
Life Completely Ruined
Be the Actor
I Am The Villain, Remarried empress (romance)
Death Is The Only Ending For The Villainess
I think I read all of the good ones so at least someone might enjoys my masterpieces. ╥﹏╥
Thanks <33
Here more rec!
Sea foam (tragic oneshot)
Bastard
An uncomfortable truth
Evil ring
Papa wolf and the puppy
Straight romance
A stepmothers marchen
The princess imprints a traitor
Yeonwoo's innocence
Kill the villainess
One night only (alpha fem x omega male) not my fav but it's different
GL
Getting to know grace
Her Shimcheong
Opium
Moonlight garden
Love thy neighbor
BL
Moritat
The beast must die
Monster and the beast
Truth or dare
Love tractor

Is the main plot good? Also is there any romance with the mc? I generally dislike romance in action manhwas, most are not well done and developed anyway, and here the main guy seems to be an old man.
In most actions manhwas characters are just fighting new bad guys every week with the main plot seemingly going nowhere(of course not every manhwa, Omniscient reader is one of my favorite novels ever) so I hope this is good.