However, the author (Toudai) understands pacing. Just when the "fluffiness" threatens to become boring, a dash of action or a heartfelt emotional revelation anchors the story. The romance is surprisingly well-handled; it leans heavily toward a harem dynamic, but it avoids the "dense protagonist" trope. Kaito is aware of the feelings around him, which is a refreshing change of pace.
The site is 100% free. No paywalls. However, it is in raw Japanese. You will need to read it as-is or use browser translation. However, the author (Toudai) understands pacing
If you have read the translated version of Isekai wa Heiwa deshita and want more, Use DeepL or Chrome Translate. The story is simple enough that machine translation works very well. However, the author (Toudai) understands pacing