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
S-Rank adventurer and second-generation sword saint, Ryunoa Styler, is reunited with his childhood friend, Aine, who has been reduced to slavery.
Ryunoa purchases Aine in order to save her, however, she\s been given a cursed collar that causes the wearer to go into \heat\ once a day...
Ryunoa\s battle to find a way to remove the collar starts now!