Artia the guild where the brother is from was betrayed by his friends and lover from the same guild. The MC who received the delivered pocket watch from his brother had a kind of flashback of what happened to his brother including all the important points to do in the tower. The MC wants to take revenge to those people (friends and lover who betrayed) who stabbed his brother's heart. It's not yet pointed out why they betrayed him, but in the recent chapters one from those people who betrayed the brother, he was apparently a spy from another guild
Hope this helps (づ￣ ³￣)づ
Thank you so much, bless you!!!
Can someone please explain, what exactly happened to the brother? Why is MC trying to get revenge on these powerful people? What did they do and *why* did they do it?