Day 6: July 6th 
からかい上手の(元)高木さん Volume 12 (22% ➨ 29%)
ひよ恋 Volume 3 (0% ➨ 16%)
We’ve got you covered:
I haven’t tried reading it yet, but I extracted vocabulary/frequency information for the first four volumes.
Vocabulary isn’t everything, but knowing the most frequently used 1,000 words in the series’ll give you about 80–85% coverage.
Disclaimer: I haven’t excluded names and copyright pages from the extract. Once I do that, the stats will adjust accordingly.