
What’s the most likely reason Xebec didn’t act?
1. Imu was simply way too strong.
Xebec realized that he couldn’t win.
2. He needed a specific power (like the Yami Yami no Mi) to take Imu's place and become king of the world.
Maybe he knew he was missing a key ability to counter or even absorb Imu’s power and immortality.
3. It wasn’t the right time to strike. Killing Imu then would’ve ruined a bigger plan, and he wasn't ready to take on all his allies.