Yagi Yuki

Pro-wrestler Shibata Genzou who's a pet animals maniac was suddenly summoned to a different world. Genzou was asked by the princess to get rid of the evil beasts called monsters roaming in this world. Outraged that he was asked to kill monsters, he german suplexed the princess. Unable to get back to earth, he decided to live a slow peaceful life in this world. This is a story…

With nothing left to lose, ordinary high school student Shinozaki Haruka confesses to beautiful, diligent class representative Kousaka Akiho and to his surprise she accepts. Kousaka takes dating as seriously as she does everything else, but does not quite get it. She pragmatically suggests activities that are too sexual. Source: ANN

Note: Bundled with the limited edition of the sixth manga volume.