From Old Country Bumpkin to Master Swordsman manga volume 2: My Hotshot Disciples Are All Grown Up Now, and They Won't Leave Me Alone was written by Shigeru Sagazaki and Tetsuhiro Nabeshima and art by Kazuki Sato.

Old swordmaster Beryl Gardinant has become a special instructor for the order of knights. His former disciple Serena, now a black rank adventurer, asks him to help her go on a dungeon attack. Though he has almost no dungeon-attacking experience, Beryl accepts her request. But when representatives from the adventurer's guild doubt his strength, he somehow ends up dueling Serena…?!