You do not need to be a parent to enjoy this series, you just need a little empathy.
This is a story that will make you feel empathy or at the very least, make you feel empathetic for a little bit. It will find its way to you regardless if you are a parent, or a child. It is not important if the stories first main hook hits you like it hits someone else, you may feel sad or angry. And it is a slow burn. You will hate some characters, and love others as they grow past their initial introductions. The failings of many webstories, and manga tend to have week character writing. But not here.
With the main character Warrior Noh, is introduced as the every day mercenary and soon to be father. His personal greed of youth and love slowly vanish as his life of taking care of his children. He is a man who lost the love of his life, but gained three children to nurture, to protect. When he has to leave them for long periods of time the author, and the artist, make sure to show you just how much it hurts both parent and child to be separate for so long. As one of the main arcs of the series is Noh being away from his children for what seems like a year.
His children, and their mentors, have amazing writing. They are all pure, but still have aspects of their father, greed, laziness, or his intelligence. Yet they also have their own personalities and goals. Not just to be like their father, but to become people who are dependable.
There is much to this story, but the driving characters are Warrior Noh, and his children. The arcs of this story make sure to cement in your mind that there is no status quo for this comic. It changes and evolves due to the great character writing from the author. And the artists work is phenomenal, his understanding of emotion, anatomy and when to draw unorthodox is amazing.
A great story if you have the slightest bit of empathy in your body!