The most significant downside is the issue of Larilo's safety.
Let alone Larilo's strength, which is somewhat weak amidst the "Ancient Continent" teeming with strong individuals; just talking about the Chaos Witch...
The Chaos Witch is so interested in Larilo that Qiu Tu cannot be sure she won't do something to her...
Thinking like this, Qiu Tu's brain inadvertently spins, evaluating Larilo's safety factor.
First of all... Larilo is not alone. She has me, and Zhao Ji by her side.
I might not hold much status in the Chaos Witch's mind, but Zhao Ji should. With Zhao Ji standing there, it's highly unlikely the Chaos Witch will act directly.
Secondly... the Chaos Witch should still be hiding her identity now.
Though I don't know why she's doing this. But... Qiu Tu feels she probably won't just expose her identity for Larilo.
