From Old Country Bumpkin to Master Swordsman: My Hotshot Discples Are All Grown Up Now and They Won't Leave Me Alone (片田舎のおっさん、剣聖になる ～ただの田舎の剣術師範だったのに、大成した弟子たちが俺を放ってくれない件～, Katainaka no Ossan, Kensei ni Naru: Tada no Inaka no Kenjutsu Shihan Datta noni, Taisei Shita Deshitachi ga Ore o Hōttekurenai Ken) is a Japanese light novel series written by Shigeru Sagazaki and illustrated by Tetsuhiro Nabeshima.

Written by Shigeru Sagazaki, From Old Country Bumpkin to Master Swordsman: My Hotshot Discples Are All Grown Up Now and They Won't Leave Me Alone began serialization on the user-generated novel publishing website Shōsetsuka ni Narō on November 17, 2020.

[9] It was later acquired by Square Enix who began publishing it as a light novel with illustrations by Tetsuhiro Nabeshima under their SQEX Novel imprint on April 7, 2021.

[7] Another spin-off manga series, titled Katainaka no Ossan, Kensei ni Naru Gaiden: Ryūsōken no Kiseki, began serialization in Square Enix's Young Gangan magazine on February 7, 2025.

The series is written by Zenji Yotsuya and illustrated by Sasami Hazama and is centered around the character Surena Lysandra.

The series is produced by Passione and Hayabusa Film and directed by Akio Kazumi, with scripts written by Kunihiko Okada, characters designed by Satsuki Hayasaka who is also serving as chief animation director, and music composed by Yasuharu Takanashi.