I have a very uneasy relationship with studio Poro. On one hand their animation is excellent, and they have a cast of capable and erotic voice actresses, but at the same time their choreography tends to be very formulaic and cookie-cutter, and sometimes the VAs sound uninvested or simply disinterested. Anyways, enough about my anti-Poro crusade, you came here to read a review. The story goes something like this, both the demons and angels have their sights set on some random nobody four-eyes loser, and for some reason they each want him and want to keep the other side from getting him. Naturally the onlyway to win a guy's heart is through his dick.
The art is something that Poro manages to get right most of the time, and it's certainly apparent here. The character designs are great, I could see them fitting into most of the modern harems that come out every season, you know, if they managed to keep their panties on. But here's where the problem starts.
Firika is a great character, this review would've been an 7/10 or maybe even 8/10 if she was the only girl, but then you've got Sera who really doesn't have any business being in a hentai. Trying to watch the Sera sex scenes is like trying to pass kidney stones, it's painful, feels like forever, but it's something you have to do in order to enjoy life again. I'm pretty sure I'm exaggerating, it's been little more than a year since I last watched Nuki Doki, though I distinctly remember hating Sera's role in the title.
Anyways to summarize, excellent art and voice quality, I enjoyed the sex with Firika, the sex with Sera you might as well replace her with a cardboard box since all she's doing is taking up screentime where Firika isn't having hot demon sex with the MC.