Issho Ni Ken No Shugyou O Shita Osananajimi Ga Dorei Ni Natteita No De, S-rank Boukensha No Boku Wa Kanojo O Katte Mamoru Koto Ni Shita, My Childhood Friend Who I Used to Train Swordsmanship With Became a Slave, so I, as an S-Rank Adventurer Decided to Buy Her and Protect Her,My Childhood Friend Who I Used to Train Swordsmanship With Became a Slave, so I, as an S-Rank Adventurer, Decided to Buy and Protect Her,Osadore,一緒に剣の修行をした幼馴染が奴隷になっていたので、Sランク冒険者の僕は彼女を買って守ることにした