An Opinion about Made In Abyss Anime

I loved the animation. The character design was so fresh. I'm tired of generic moe design everywhere. But I had a problem with the last episodes. But this animation have a big problem: Rythm.

God, ¿why they couldn't keep what happened to mitty as a secret for a little? I mean, I know this is an adaptation so technically the anime is not the source of this but... I mean, when I watched the episode 10 I thought that I just skipped episodes. I loved the Nanachi story arc (a little edgy but its nothing offensive like Tokyo Ghoul shit or something) and it is a 13 chapters animation but I don't know. A little more suspense would be awesome. What do you think?