More info: https://dlraw.net/%E3%83%80%E3%82%A6%E3%83%B3%E3%83%AD%E3%83%BC%E3%83%89/Novel-%E3%82%B4%E3%83%96%E3%83%AA%E3%83%B3%E3%82%B9%E3%83%AC%E3%82%A4%E3%83%A4%E3%83%BC%E5%A4%96%E4%BC%9D%EF%BC%92-%E9%8D%94%E9%B3%B4%E3%81%AE%E5%A4%AA%E5%88%80%E2%89%AA%E3%83%80%E3%82%A4%E3%83%BB%E3%82%AB%E3%82%BF%E3%83%8A%E2%89%AB%E4%B8%8A-Goburin-Sureiya-Gaiden-Dai-Katana-vol-01/ -