Ep 12 – “Birth of a Boy Swordsman: The Battle of First Apprentice Yahiko” / “Shōnen Kenshi Tanjō! Ichiban Deshi Yahiko no Tatakai” (少年剣士誕生! 一番弟子 弥彦の戦い)

Yahiko meets a cute girl named Tsubame Sanjō, who works at the Akabeko restaurant under Tae Sekihara. She is being forced into making a copy of the key to the Akabeko restaurant by a group of thugs, and Yahiko decides to help her by himself. He defeats the thugs, although with a little help from the group.