User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-33939194-20180515104156/@comment-34061653-20180515224228

Of course the gods are scared. When it was known that Indra was competing, many gods withdrew out of fear however more gods dropout do to these young devils being stronger than they imagine. Fenrir is known to be the devour of gods and yet they see a young devil equipped with Balor being able to fight against a monster close to his prime. Crom Cruach is known to be the strongest evil dragon who's power in the league as the heavenly dragons and did so with basic dragon abilities. The battle betweem him and Vali would obviously shock the gods.

Ddraig and Albion are known as the heavenly dragons who has power that can rival gods. In fact they are stronger than most gods. So seeing Ddraig resurrected and make short work of Apollon and defeat a top 10 class god like Typhon would obvious scare the gods. In addition Issei just defeat the new chief god of Norse. Yeah, seeing these young devils being able to fight with god class power? The gods are scared.

Oh and Issei is considered a threat because of the abnormalities that occurs around him as well as his power.