Please suggest novels where the MC is the best of the best in their world and they reincarnate and act like their original age/mentality unlike most japanese isekai novels where the mc becomes a kid mentally too.
Does it have to be male MC? The Empress' Livestream fits the bill of this, she was the best fighter in her world then got reincarnated to an ancient China setting. This book is good at Kingdom Building.
RE: Trailer Trash One of the best web novels I've read......... The character development is really good.