That Time I Got Reincarnated As A Slime Vol 8

That Time I Got Reincarnated As A Slime Vol 8 by Fuse. A Fantasy manga rated Older Teen, published in English by Yen Press in 2018.

Thirty-seven-year-old salaryman Satoru Mikami is stabbed by a stranger and wakes up in a fantasy world as a slime. With a few unusual skills and a friendship with a powerful dragon, the slime, now named Rimuru, starts building a nation where monsters of every kind can live together.