Yagen Toushirou

Оригінальне ім’я: 薬研藤四郎

A tantou made by Awataguchi Yoshimitsu. One of the Toushirou brothers. The origin of it's name comes from the stone medicine mortar that it cut, earning the reputation as a sword with "an extraordinary cutting ability but will not kill its master." Because he's raised for the battlefield, he has some medical science knowledge.