Initially, he went with Jia's plan, but now that he was actually here, he realized that they had indeed missed something. Instead of making up with the 'heir' of Yael Clan, the Wester Clan directly decided to kill them after luring them inside, where they had no chance of escape.
Gabriel had considered two possibilities behind it. First was that they already knew what Azen Yael looked like. And the second was that they didn't care. They just didn't want to pay to make up for Yulia's mistakes, instead burying them here forever.
Other than them, no one else knew that they were inside the Wester Clan after all.
"And here I thought I could go easy this time."
Gabriel opened the door, after noticing some powerful auras getting closer. Since the clan already knew about his so-called strong guards, they had sent their elders to get rid of him swiftly.