The Veteran Space-Time Swordsman Returns to Youth ~ His Second Life ~ The Old Man has a Young Body to Save the Weak ~ (1) / Tetsujin Jusu Brave Library
※Please note that product information is not in full comprehensive meaning because of the machine translation.
Japanese title: ライトノベル文庫サイズ 老練の時空剣士、若返る ~二度目の人生、弱きを救うため爺は若い体で無双する~(1) / 鉄人じゅす ブレイブ文庫