Can't help but grin whenever I talk about a cozy isekai like this — the book you're asking about, 'My Quiet Blacksmith Life in Another World', was written by Kumanano. I first stumbled across the name on a recommendation list, and it stuck because the tone of the prose feels very personal and low-key, which fits the title perfectly. Kumanano's writing leans into slice-of-life pacing even while wearing an isekai coat, so the blacksmithing details and worldbuilding come off as lovingly crafted rather than rushed.
If you like tinkering narratives where the protagonist hammers out more than just weapons — friendships, a sense of place, and a slow-burn life — Kumanano is the hand behind it. There’s often an online serialization vibe to works like this, and the author captures that calm, domestic energy that makes recommits to rereads easy for me. I always end up smiling at the quiet moments, and that’s very much the author’s doing.