Just finished the lightnovel

As in the title i wanted to discuss the ending

I think It was kinda raw the finish shiro appeared to prevent the demon lord of using humility and fought D, but wasn't like a good fight, IMO it was supposed to be a confrontation between D and shiro but was just a barrage of scythe hits that finished D hp, and even D say she wasn't happy by shiro intervation, it should be more epic, and when didn't even get to see a interaction between sariel and shiro or sariel and the demon lord, it was oing to be an epic final then it just ended, I felt like someone just stole my food on the last and most delicious spoonful and I was left wandering what it would taste like