As someone who love the manga and is also considering reading the light novel, I will be honest, this adaptation is terrible, and even if I never had read the manga I would still think it would be bad.
It had a lot of potential, but it ended up that they removed a lot from the story and made the quality poor. The character design in the anime version, animation and composition are not making it better, and it feels like they tried to make the anime suited more for the younger audience.
I can't recommend the anime to anyone, but I will recommend friends to read the manga or light novel instead.