Solving the Case is Slightly Bitter, My Sister is Super Sweet.

Summary

Lin Xuan, a new leader of the Special Investigation Team, is welcomed warmly by his colleagues. He is praised for his exceptional abilities and character, having proven himself during previous cases. At the shooting range, he quickly learns firearms skills from Guo Xu, shocking him with his incredible learning ability and physical prowess. Later, he visits his parents, revealing he lives with two sisters, which surprisingly doesn't upset them. His father even compliments him, suggesting Lin Xuan has exceeded his own achievements.

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