The Aurora Sanctuary indeed needs to be checked, we can't always be blocked by that angel.
But Herbert did not plan to go there at first.
He needed to do more preparation.
After all, the impression left from the last reckless "glance" was too profound.
The giant eyeball, like the primordial angel depicted in scripture, was just too stimulating.
Moreover, that insane hymn was quite brainwashing; it took a long time to get that melody out of his mind.
However, Herbert didn't choose to ask others for help; he didn't let the monastery bigwigs purify some of his soul—he was worried they'd purify something else too.
Herbert chose the foolish method of using poison against poison, constantly repeating more brainwashing music from his past life in his mind, completely suppressing that hymn.
Thankfully, he didn't have to take an exam now, otherwise, during the exam, his mind would surely be in a mad loop of divine song mash-up...
