I don't like how your MC acts literally! He just destroyed the image of Miyamura. he's so annoyingly arrogant. We don't forget the OOC of Kakashi. Especially your MC telling Kakashi of what's to do? Remember your MC is still weak and Kakashi is much more stronger to him. I know that you'll said that he already knows the world background of fairy tail and he should take the lead. but remember that your MC send some information in the group. Kakashi should already know about that cause he's a genius. and literally no one suspects where this dimensional chat group come from. like the five members just accept it without knowing much more information about it. Also the MC just literally said he's real identity and he's so much more becomingly annoying. Like when he bumped into hinata, He is so creepy. I really regret reading this fic

why the heck are you annoyed with Minato? He's helping you!

'Sensei' is a Japanese term. you should have use 掌握 'master' or 老师 'teacher'. cause against the gods is a Chinese novel. if you want to make a fan fiction of it you shouldn't use some Japanese term in your writing.

Your Sypnosis is kinda confusing.It can hook some readers, but really I'm confused. maybe I should read your story first to understand. hopefull to read a great fanfic again.