@optiso:
I mean, it is a slow, relaxed adventure (unlike nearly every other isekai with "slow life" in the title, this one actually does a decent job living down to that title so far, more or less). The adventure starts with the adoptive grandpa figure saying, "Alright kid, you should go out and see the world for a bit, it'll do you good", and so far involves no grand quest, just some wandering around selling herbs and getting very modestly involved in other people's business.
"Slice-of-life" is a stretch but there is, at least, a lot of focus on day-to-day activities (and the occasional moment that does a good job of capturing atmosphere rather than advancing plot, though it's no masterpiece in that regard); and the "action", while most certainly present, is so far not really the central theme.
For better or for worse, there's also a lot of stock isekai tropes here. None of the super offensive ones so far, and none of the immersion-breaking ones, but someone wasn't feeling terribly original, which is a shame in a slow exploratory thing like this.