The twenty-fifth level lord was defeated by Fang Zheng and the others without any danger. Although they ultimately won, Fang Zheng discovered a significant problem.
That is the current power balance within the Raid Group.
If the entire Raid Group of the Dark Moon Sword is compared to a game character, then this character's attack is ranked A, agility is A, while defense is approximately at C—this is entirely supported by Seven Seas and Aoba. If these two are absent, the defense rank of the Raid Group would only be D.
To put it bluntly, the current issue for the Raid Group is high attack and high agility but low defense. They don't have to worry much about single-target attacks, but issues arise when encountering continuous AOE attacks.
However, solving this problem is equally challenging.