This manga is a very fun read. It makes a good use of gore when it's needed, it has intense fighting, it has likeable characters, it contains a deeper world building and it has decent erotica. The writer and manga artist don't hold back whatsoever. The story premise has some similarities with Highschool DxD but the main objective/main character are completely different and the rest of the world building differs enough to make it feel like a fully original work. It makes you anticipate for the next step almost every single chapter. The character building is better than most in this genre and it manycharacters definitely contain some edge to them.

As for predictability, I'd say it's not too predictable nor too unpredictable. Right around where I personally want such a story to be (although I don't mind if a story can be very unpredictable). It doesn't pull punches and it hasn't made the main protag into an overpowered uninteresting character.

If you're looking for a fun, action packed, ecchi manga to read I'd definitely recommend this.