I was reading Tensei Shitara Slime Slime Datta Ken light novel, and then the main character says "すまんな、性格が悪いもんでね。まあ、ここで話すのもなんだし、場所を変えて飯でも食いながら話聞くわ". I thought wa was mainly used by women and I wondered if it was a special use of wa or a character trait or something.
by hernan_93