it was a good isekai...when it came out, nowadays others pushed it underground, for both plot and art style...I almost forgot that 90% of isekai where drawn fromdogs at the start of the trend.
Sadly this one totally deserved a axe, a good plot that doesn't have bloody revenge or fast harem isn't enough to counter low quality and a increbly slow release...only 40 chapters from 2013, and they never returned on the corrupt country that enslave summoned heroes, a real waste.
We can only hope it gets rebooted or continued from another mangaka in the future, I know of a few isekai that have multiple releases with decent art and the story not even being much distant from 2 versions running in parallel, so is not impossible.