
Just come back from spoiler. You can check it yourself.
Reddit: https://www.reddit.com/r/mangago/comments/13afcvj/codename_anastasia_spoilers/?rdt=55709
Novel updates (more detailed): http://novelupdatesforum.com/threads/codename-anastasia-%EC%BD%94%EB%93%9C%EB%84%A4%EC%9E%84-%EC%95%84%EB%82%98%EC%8A%A4%ED%83%80%EC%83%A4.167697/

I know Dojun's hyung has his own difficulties after their parents death. However, nothing can excuse his dismissive treatment towards his one and only brother. Maybe he was fed with the fake news about Dojun living happily, or he was afraid of grandpa will hurt Dojun if he come in contact with him, or he might has a one time sneak around to see Dojun and saw Dojun live normally then thought his present will only disturb Dojun, or whatever reason. Nothing at all can erase the fact that he abandoned his own brother and only contacted him when they meet by coincidence. Dojun better has no relation at all with that pathetic family.

I wonder what happened to Jigu for him acted like he did in 1st chapter.

Pretty sure stalkers and stuff. Cuz he was attacked by those jealous no life gamers who think he’s cheating and can’t take a L cuz of their non existent pride. They stalked him, dug up his information and stuff too, and even found his family members on social media tf☠ he had to move away cuz of them too.
Maybe the cover need to be changed, to help people that have problem with reading comprehension. The cover might cause misunderstanding ╮( ̄▽ ̄)╭
In the story Ryeong clearly stated their relationship is not father-son or master-discipline, but a companionship. Not in romantic way, but in a friendship way. As Ryeong already taken too much role for being an elder figure, now he just want an equal standing that comes from a friend. When they meet, Paljae's body is severely broken and only his finger intact. Ryeong cultivated that finger that become a children body. That is why Paljae didn't grow in the span of human children, he grow fast as his body recover to his previous form.
Paljae only lose his memory, its not like he's reborn and start again as a child. He's not an innocent child that can be brain washed and thoroughly innocent. He just forget everything, but his brain and instinct work like an adult does. So Ryeong need to teach him the way of living and how the world works. Besides that, their fate are mixed with time. Their encounter is not just in this timeline, but far long ago. They must have this karma from each other that they need to resolve.