Tate no Yuusha no Nariagari, Chihou Kishi Hans no Junan Recommendations
1) A group of japanese people are transported to another world with special powers
2) Both works have rpg features and "cheat skills"
3) Both works are narrated since the point of view of a "NPC" (in Chihou Kishi Hans no Junan) and a Antihero (In Tate no Yuusha) character
4) Both LNs have great characters