User blog comment:Jopjopjop/SlashDog/@comment-24098614-20150131132040/@comment-16281343-20150131133554

Azazel already has his eyes on him a long time ago. Him and other independent Sacred Gear users whose SG houses the Four Gods are being monitored and protected by Grigori behind the scenes.

That's why he and the other SG users wasn't able to attend the school trip because they know that someone is plotting to steal them.